Sinilink: Initial support

Developed and tested against the XY-AP50L

.idea/dictionaries/t.xml

@@ -157,6 +157,7 @@
       <w>shahrabani</w>
       <w>shimokawa</w>
       <w>shokz</w>
+      <w>sinilink</w>
       <w>sint</w>
       <w>skype</w>
       <w>slezak</w>

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java

@@ -170,6 +170,7 @@ public class DeviceSettingsPreferenceConst {
     public static final String PREF_ALWAYS_ON_DISPLAY_STYLE = "always_on_display_style";
 
     public static final String PREF_VOLUME = "volume";
+    public static final String PREF_PROMPT_TONE = "prompt_tone";
     public static final String PREF_CROWN_VIBRATION = "crown_vibration";
     public static final String PREF_ALERT_TONE = "alert_tone";
     public static final String PREF_COVER_TO_MUTE = "cover_to_mute";

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java

@@ -1001,6 +1001,7 @@ public class DeviceSpecificSettingsFragment extends AbstractPreferenceFragment i
 
         addPreferenceHandlerFor(PREF_VOLUME);
         addPreferenceHandlerFor(PREF_CROWN_VIBRATION);
+        addPreferenceHandlerFor(PREF_PROMPT_TONE);
         addPreferenceHandlerFor(PREF_ALERT_TONE);
         addPreferenceHandlerFor(PREF_COVER_TO_MUTE);
         addPreferenceHandlerFor(PREF_VIBRATE_FOR_ALERT);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBDeviceAdapterv2.java

@@ -888,7 +888,7 @@ public class GBDeviceAdapterv2 extends ListAdapter<GBDevice, GBDeviceAdapterv2.V
             }
 
             final String label = action.getLabel(device, context);
-            if (!StringUtils.isEmpty(label)) {
+            if (!StringUtils.isNullOrEmpty(label)) {
                 holder.customActions[i].label.setVisibility(View.VISIBLE);
                 holder.customActions[i].label.setText(label);
             } else {

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/capabilities/password/PasswordCapabilityImpl.java

@@ -34,6 +34,7 @@ import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsHandler;
 
 public class PasswordCapabilityImpl {
+    public static final String PREF_SCREEN_PASSWORD = "pref_screen_password";
     public static final String PREF_PASSWORD = "pref_password";
     public static final String PREF_PASSWORD_ENABLED = "pref_password_enabled";
 
@@ -42,6 +43,7 @@ public class PasswordCapabilityImpl {
         NUMBERS_4_DIGITS_0_TO_9,
         NUMBERS_4_DIGITS_1_TO_4,
         NUMBERS_6,
+        VISIBLE_NUMBERS_4_DIGITS_0_TO_9,
     }
 
     public void registerPreferences(final Context context, final Mode mode, final DeviceSpecificSettingsHandler handler) {
@@ -62,6 +64,7 @@ public class PasswordCapabilityImpl {
                 password.setSummary(R.string.prefs_password_6_digits_0_to_9_summary);
                 break;
             case NUMBERS_4_DIGITS_0_TO_9:
+            case VISIBLE_NUMBERS_4_DIGITS_0_TO_9:
                 password.setSummary(R.string.prefs_password_4_digits_0_to_9_summary);
                 break;
             case NUMBERS_4_DIGITS_1_TO_4:
@@ -71,35 +74,42 @@ public class PasswordCapabilityImpl {
                 break;
         }
 
-        password.setOnBindEditTextListener(new EditTextPreference.OnBindEditTextListener() {
+        password.setOnBindEditTextListener(editText -> {
-            @Override
-            public void onBindEditText(@NonNull final EditText editText) {
             final int expectedLength;
             final List<InputFilter> inputFilters = new ArrayList<>();
 
+            int inputType;
+
             switch (mode) {
                 case NUMBERS_6:
                     password.setSummary(R.string.prefs_password_6_digits_0_to_9_summary);
-                        editText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
+                    inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD;
                     expectedLength = 6;
                     break;
                 case NUMBERS_4_DIGITS_0_TO_9:
                     password.setSummary(R.string.prefs_password_4_digits_0_to_9_summary);
-                        editText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
+                    inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD;
+                    expectedLength = 4;
+                    break;
+                case VISIBLE_NUMBERS_4_DIGITS_0_TO_9:
+                    password.setSummary(R.string.prefs_password_4_digits_0_to_9_summary);
+                    inputType = InputType.TYPE_CLASS_NUMBER;
                     expectedLength = 4;
                     break;
                 case NUMBERS_4_DIGITS_1_TO_4:
                     password.setSummary(R.string.prefs_password_4_digits_1_to_4_summary);
-                        editText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
+                    inputType = InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD;
                     expectedLength = 4;
                     inputFilters.add(new InputFilter_Digits_1to4());
                     break;
                 default:
-                        editText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
+                    inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
                     expectedLength = -1;
                     break;
             }
 
+            editText.setInputType(inputType);
+
             if (expectedLength != -1) {
                 inputFilters.add(new InputFilter.LengthFilter(expectedLength));
             }
@@ -107,7 +117,6 @@ public class PasswordCapabilityImpl {
             editText.setSelection(editText.getText().length());
             editText.setFilters(inputFilters.toArray(new InputFilter[0]));
             editText.addTextChangedListener(new ExpectedLengthTextWatcher(editText, expectedLength));
-            }
         });
     }
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/sinilink/SinilinkCoordinator.kt

@@ -0,0 +1,144 @@
+package nodomain.freeyourgadget.gadgetbridge.devices.sinilink
+
+import android.content.Context
+import nodomain.freeyourgadget.gadgetbridge.GBApplication
+import nodomain.freeyourgadget.gadgetbridge.R
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettings
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsCustomizer
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsScreen
+import nodomain.freeyourgadget.gadgetbridge.capabilities.password.PasswordCapabilityImpl
+import nodomain.freeyourgadget.gadgetbridge.devices.AbstractBLEDeviceCoordinator
+import nodomain.freeyourgadget.gadgetbridge.devices.DeviceCardAction
+import nodomain.freeyourgadget.gadgetbridge.devices.DeviceCoordinator
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice
+import nodomain.freeyourgadget.gadgetbridge.service.DeviceSupport
+import nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink.SinilinkButton
+import nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink.SinilinkPlaybackState
+import nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink.SinilinkSupport
+import java.util.regex.Pattern
+
+class SinilinkCoordinator : AbstractBLEDeviceCoordinator() {
+    override fun getSupportedDeviceName(): Pattern? {
+        return Pattern.compile("^Sinilink-APP$")
+    }
+
+    override fun getManufacturer(): String {
+        return "Xinyi Electronics"
+    }
+
+    override fun getDeviceSupportClass(device: GBDevice): Class<out DeviceSupport?> {
+        return SinilinkSupport::class.java
+    }
+
+    override fun getBondingStyle(): Int {
+        // Does not seem to be needed?
+        return BONDING_STYLE_ASK
+    }
+
+    override fun suggestUnbindBeforePair(): Boolean {
+        return false
+    }
+
+    override fun getDeviceNameResource(): Int {
+        return R.string.devicetype_sinilink
+    }
+
+    override fun getDefaultIconResource(): Int {
+        return R.drawable.ic_device_speaker
+    }
+
+    override fun getDeviceKind(device: GBDevice): DeviceCoordinator.DeviceKind? {
+        return DeviceCoordinator.DeviceKind.SPEAKER
+    }
+
+    override fun getBatteryCount(device: GBDevice): Int {
+        return 0
+    }
+
+    override fun getDeviceSpecificSettings(device: GBDevice): DeviceSpecificSettings {
+        val settings = DeviceSpecificSettings()
+
+        settings.addRootScreen(R.xml.devicesettings_sinilink)
+        settings.addRootScreen(R.xml.devicesettings_device_name)
+        settings.addRootScreen(R.xml.devicesettings_password)
+
+        settings.addConnectedPreferences(
+            DeviceSettingsPreferenceConst.PREF_MEDIA_SOURCE,
+            DeviceSettingsPreferenceConst.PREF_HEADPHONES_EQUALIZER,
+            DeviceSettingsPreferenceConst.PREF_MEDIA_PLAYBACK_MODE,
+            DeviceSettingsPreferenceConst.PREF_VOLUME,
+            DeviceSettingsPreferenceConst.PREF_PROMPT_TONE,
+            DeviceSettingsPreferenceConst.PREF_DEVICE_NAME,
+            PasswordCapabilityImpl.PREF_SCREEN_PASSWORD,
+            PasswordCapabilityImpl.PREF_PASSWORD_ENABLED,
+            PasswordCapabilityImpl.PREF_PASSWORD,
+        )
+
+        return settings
+    }
+
+    override fun getDeviceSpecificSettingsCustomizer(device: GBDevice): DeviceSpecificSettingsCustomizer {
+        return SinilinkSettingsCustomizer()
+    }
+
+    override fun getPasswordCapability(): PasswordCapabilityImpl.Mode {
+        return PasswordCapabilityImpl.Mode.VISIBLE_NUMBERS_4_DIGITS_0_TO_9
+    }
+
+    override fun getCustomActions(): List<DeviceCardAction> {
+        return DEVICE_CARD_ACTIONS
+    }
+
+    companion object {
+        private val DEVICE_CARD_ACTIONS = listOf(
+            // previous
+            object : DeviceCardAction {
+                override fun getIcon(device: GBDevice): Int {
+                    return R.drawable.ic_skip_previous
+                }
+
+                override fun getDescription(device: GBDevice, context: Context): String {
+                    return context.getString(R.string.pref_media_previous)
+                }
+
+                override fun onClick(device: GBDevice, context: Context) {
+                    GBApplication.deviceService(device).onSendConfiguration(SinilinkButton.PREVIOUS.name)
+                }
+            },
+
+            // play / pause
+            object : DeviceCardAction {
+                override fun getIcon(device: GBDevice): Int {
+                    return when (SinilinkPlaybackState.fromPreference(device.getExtraInfo("playback_state") as? String ?: return R.drawable.ic_play)) {
+                        SinilinkPlaybackState.PLAYING -> R.drawable.ic_pause
+                        else -> R.drawable.ic_play
+                    }
+                }
+
+                override fun getDescription(device: GBDevice, context: Context): String {
+                    return context.getString(R.string.moondrop_touch_action_play_pause)
+                }
+
+                override fun onClick(device: GBDevice, context: Context) {
+                    GBApplication.deviceService(device).onSendConfiguration(SinilinkButton.PLAY_PAUSE.name)
+                }
+            },
+
+            // next
+            object : DeviceCardAction {
+                override fun getIcon(device: GBDevice): Int {
+                    return R.drawable.ic_skip_next
+                }
+
+                override fun getDescription(device: GBDevice, context: Context): String {
+                    return context.getString(R.string.pref_media_next)
+                }
+
+                override fun onClick(device: GBDevice, context: Context) {
+                    GBApplication.deviceService(device).onSendConfiguration(SinilinkButton.NEXT.name)
+                }
+            }
+        )
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/sinilink/SinilinkSettingsCustomizer.kt

@@ -0,0 +1,65 @@
+/*  Copyright (C) 2026 José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.devices.sinilink
+
+import android.text.InputFilter
+import android.text.InputFilter.LengthFilter
+import android.widget.EditText
+import androidx.preference.EditTextPreference
+import androidx.preference.EditTextPreference.OnBindEditTextListener
+import androidx.preference.Preference
+import kotlinx.parcelize.Parcelize
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsCustomizer
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsHandler
+import nodomain.freeyourgadget.gadgetbridge.capabilities.password.PasswordCapabilityImpl.PREF_PASSWORD_ENABLED
+import nodomain.freeyourgadget.gadgetbridge.capabilities.password.PasswordCapabilityImpl.PREF_SCREEN_PASSWORD
+import nodomain.freeyourgadget.gadgetbridge.service.devices.earfun.prefs.EarFunSettingsPreferenceConst
+import nodomain.freeyourgadget.gadgetbridge.util.Prefs
+
+
+@Parcelize
+class SinilinkSettingsCustomizer : DeviceSpecificSettingsCustomizer {
+    override fun onPreferenceChange(preference: Preference, handler: DeviceSpecificSettingsHandler
+    ) {
+    }
+
+    override fun onDeviceChanged(handler: DeviceSpecificSettingsHandler) {
+
+    }
+
+    override fun customizeSettings(
+        handler: DeviceSpecificSettingsHandler,
+        genericDevicePrefs: Prefs,
+        rootKey: String?
+    ) {
+        // Override the default summary if it is not a band or a watch
+        handler.findPreference<Preference>(PREF_SCREEN_PASSWORD)?.summary = null
+        handler.findPreference<Preference>(PREF_PASSWORD_ENABLED)?.summary = null
+
+        handler.findPreference<EditTextPreference>(DeviceSettingsPreferenceConst.PREF_DEVICE_NAME)?.let {
+            it.setOnBindEditTextListener { editText: EditText? ->
+                editText!!.setFilters(arrayOf<InputFilter>(LengthFilter(10)))
+            }
+        }
+    }
+
+    override fun getPreferenceKeysWithSummary(): Set<String> {
+        return setOf()
+    }
+
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java

@@ -405,6 +405,7 @@ import nodomain.freeyourgadget.gadgetbridge.devices.sbm_67.SanitasSBM67Coordinat
 import nodomain.freeyourgadget.gadgetbridge.devices.sbm_67.SilverCrestSBM67Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.scannable.ScannableDeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.shokz.ShokzOpenSwimProCoordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.sinilink.SinilinkCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.smaq2oss.SMAQ2OSSCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.soflow.SoFlowCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.sony.headphones.coordinators.SonyLinkBudsCoordinator;
@@ -819,6 +820,7 @@ public enum DeviceType {
     SONY_WH_CH720N(SonyWHCH720NCoordinator.class),
     PIXEL_BUDS_A(PixelBudsACoordinator.class),
     SHOKZ_OPENSWIM_PRO(ShokzOpenSwimProCoordinator.class),
+    SINILINK(SinilinkCoordinator.class),
     ONETOUCH(OneTouchCoordinator.class),
     SOUNDCORE_LIBERTY3_PRO(SoundcoreLiberty3ProCoordinator.class),
     SOUNDCORE_LIBERTY4_NC(SoundcoreLiberty4NCCoordinator.class),

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/BleNamesResolver.java

@@ -606,6 +606,7 @@ public class BleNamesResolver {
         mServices.put("8d53dc1d-1db7-4cd3-868b-8a527460aa84", "(Propr: SMP - Simple Management Protocol)");
         mServices.put("6e40fff0-b5a3-f393-e0a9-e50e24dcca9e", "(Propr: NUS - Nordic UART Service)");
         mServices.put("de5bf728-d711-4e47-af26-65e3012a5dc7", "(Propr: Yawell Serial)");
+        mServices.put("0000ae00-0000-1000-8000-00805f9b34fb", "(Propr: Sinilink-APP)");
 
         // source https://bitbucket.org/bluetooth-SIG/public/src/main/assigned_numbers/uuids/characteristic_uuids.yaml
         mCharacteristics.put("00002a00-0000-1000-8000-00805f9b34fb", "Device Name");
@@ -1202,6 +1203,8 @@ public class BleNamesResolver {
         mCharacteristics.put("6e400003-b5a3-f393-e0a9-e50e24dcca9e", "(Propr: Nordic UART RX)");
         mCharacteristics.put("de5bf729-d711-4e47-af26-65e3012a5dc7", "(Propr: Yawell Notify)");
         mCharacteristics.put("de5bf72a-d711-4e47-af26-65e3012a5dc7", "(Propr: Yawell Write)");
+        mCharacteristics.put("0000ae04-0000-1000-8000-00805f9b34fb", "(Propr: Sinilink-APP RX)");
+        mCharacteristics.put("0000ae10-0000-1000-8000-00805f9b34fb", "(Propr: Sinilink-APP TX)");
 
         mValueFormats.put(52, "32bit float");
         mValueFormats.put(50, "16bit float");

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sinilink/SinilinkArguments.kt

@@ -0,0 +1,67 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink
+
+enum class SinilinkEqualizer(val code: Int) {
+    NORMAL(0x09),
+    ROCK(0x0a),
+    POP(0x0b),
+    CLASSIC(0x0c),
+    JAZZ(0x0d),
+    COUNTRY(0x0e),
+    ;
+
+    companion object {
+        fun fromPreference(value: String): SinilinkEqualizer? = entries.find { it.name == value.uppercase() }
+        fun fromCode(code: Int): SinilinkEqualizer? = entries.find { it.code == code }
+    }
+}
+
+enum class SinilinkPlaybackMode(val code: Int) {
+    SINGLE_HEAD(0x10),
+    SINGLE_CYCLE(0x11),
+    RANDOM(0x12),
+    ORDER(0x13),
+    LIST_CYCLE(0x0f),
+    ;
+
+    companion object {
+        fun fromPreference(value: String): SinilinkPlaybackMode? = entries.find { it.name == value.uppercase() }
+        fun fromCode(code: Int): SinilinkPlaybackMode? = entries.find { it.code == code }
+    }
+}
+
+enum class SinilinkPlaybackState(val code: Int) {
+    IDLE(0x01),
+    PLAYING(0x02),
+    ;
+
+    companion object {
+        fun fromPreference(value: String): SinilinkPlaybackState? = entries.find { it.name == value.uppercase() }
+        fun fromCode(code: Int): SinilinkPlaybackState? = entries.find { it.code == code }
+    }
+}
+
+enum class SinilinkMediaSource(val code: Int) {
+    TF(0x03),
+    USB(0x04),
+    BLUETOOTH(0x14),
+    AUDIO_CARD(0x15),
+    AUX(0x16),
+    ;
+
+    companion object {
+        fun fromPreference(value: String): SinilinkMediaSource? = entries.find { it.name == value.uppercase() }
+        fun fromCode(code: Int): SinilinkMediaSource? = entries.find { it.code == code }
+    }
+}
+
+enum class SinilinkButton(val code: Int) {
+    PLAY_PAUSE(0x01),
+    PREVIOUS(0x07),
+    NEXT(0x08),
+    ;
+
+    companion object {
+        fun fromPreference(value: String): SinilinkButton? = entries.find { it.name == value.uppercase() }
+        fun fromCode(code: Int): SinilinkButton? = entries.find { it.code == code }
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/sinilink/SinilinkSupport.kt

@@ -0,0 +1,392 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink
+
+import android.bluetooth.BluetoothGatt
+import android.bluetooth.BluetoothGattCharacteristic
+import androidx.core.text.isDigitsOnly
+import nodomain.freeyourgadget.gadgetbridge.GBApplication
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst
+import nodomain.freeyourgadget.gadgetbridge.capabilities.password.PasswordCapabilityImpl
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventUpdatePreferences
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventVersionInfo
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice
+import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLESingleDeviceSupport
+import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder
+import nodomain.freeyourgadget.gadgetbridge.service.devices.sinilink.SinilinkSupport.Companion.UUID_CHARACTERISTIC_SINILINK_RX
+import nodomain.freeyourgadget.gadgetbridge.util.Prefs
+import org.slf4j.LoggerFactory
+import java.nio.ByteBuffer
+import java.util.UUID
+
+class SinilinkSupport : AbstractBTLESingleDeviceSupport(LOG) {
+    private var gotName = false
+    private var gotFirmware = false
+    private var gotStatus = false
+    private var gotEvent = false
+
+    init {
+        addSupportedService(UUID_SERVICE_SINILINK)
+    }
+
+    override fun useAutoConnect(): Boolean = true
+
+    override fun initializeDevice(builder: TransactionBuilder): TransactionBuilder {
+        gotName = false
+        gotFirmware = false
+        gotStatus = false
+        gotEvent = false
+
+        builder.setDeviceState(GBDevice.State.INITIALIZING)
+
+        builder.notify(UUID_CHARACTERISTIC_SINILINK_RX, true)
+
+        // Request version
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(byteArrayOf(CMD_VERSION.toByte())))
+
+        // Request status (volume, prompt tone, password)
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(byteArrayOf(CMD_STATUS_GET.toByte())))
+
+        // Read the TX characteristic, this triggers an event (?)
+        builder.read(UUID_CHARACTERISTIC_SINILINK_TX)
+
+        // Request name
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(byteArrayOf(CMD_NAME_GET.toByte())))
+
+        // Will be set to initialized once we receive the settings
+
+        return builder
+    }
+
+    override fun onCharacteristicChanged(
+        gatt: BluetoothGatt,
+        characteristic: BluetoothGattCharacteristic,
+        value: ByteArray,
+    ): Boolean {
+        if (characteristic.uuid == UUID_CHARACTERISTIC_SINILINK_RX) {
+            parseFrame(value)
+            return true
+        }
+
+        return super.onCharacteristicChanged(gatt, characteristic, value)
+    }
+
+    override fun onCharacteristicRead(
+        gatt: BluetoothGatt,
+        characteristic: BluetoothGattCharacteristic,
+        value: ByteArray,
+        status: Int
+    ): Boolean {
+        if (status == BluetoothGatt.GATT_SUCCESS && characteristic.uuid == UUID_CHARACTERISTIC_SINILINK_TX) {
+            parseFrame(value)
+            return true
+        }
+
+        return super.onCharacteristicRead(gatt, characteristic, value, status)
+    }
+
+    private fun parseFrame(frame: ByteArray) {
+        if (frame.size < 5) {
+            LOG.warn("Frame too short: {}", frame.size)
+            return
+        }
+
+        if (frame[0].toInt() and 0xff != FRAME_SOF) {
+            LOG.warn("Unexpected SOF: 0x{}", Integer.toHexString(frame[0].toInt() and 0xff))
+            return
+        }
+
+        val declaredLen = frame[1].toInt() and 0xff
+        if (declaredLen != frame.size) {
+            LOG.warn("Length mismatch: declared={}, actual={}", declaredLen, frame.size)
+            return
+        }
+
+        val checksumHiIdx = frame.size - 2
+        val calculated = frame.slice(0 until checksumHiIdx).sumOf { it.toInt() and 0xff } % 65536
+        val received = ((frame[checksumHiIdx].toInt() and 0xff) shl 8) or (frame[checksumHiIdx + 1].toInt() and 0xff)
+        if (calculated != received) {
+            LOG.warn(
+                "Checksum mismatch: calculated=0x{}, received=0x{}",
+                Integer.toHexString(calculated),
+                Integer.toHexString(received),
+            )
+            return
+        }
+
+        val payload = frame.sliceArray(2 until checksumHiIdx)
+        if (payload.isEmpty()) {
+            LOG.warn("Empty payload")
+            return
+        }
+
+        try {
+            handlePayload(payload)
+        } catch (e: Exception) {
+            LOG.error("Failed to handle payload", e)
+        }
+
+        if (gotName && gotStatus && gotFirmware && gotEvent && !device.isInitialized) {
+            device.state = GBDevice.State.INITIALIZED
+            device.sendDeviceUpdateIntent(context)
+        }
+    }
+
+    private fun handlePayload(payload: ByteArray) {
+        LOG.debug("Got payload: {}", payload.toHexString())
+
+        when (val cmd = payload[0].toInt() and 0xff) {
+            CMD_STATUS_GET -> handleStatus(payload)
+            CMD_EVENT_NOTIFICATION_1, CMD_EVENT_NOTIFICATION_2 -> handleEvent(payload)
+            CMD_VERSION -> handleVersion(payload)
+            CMD_NAME_GET -> handleName(payload)
+            else -> {
+                LOG.debug("Unhandled notification command: 0x{}", Integer.toHexString(cmd))
+            }
+        }
+    }
+
+    private fun handleStatus(payload: ByteArray) {
+        if (payload.size != 12) {
+            LOG.warn("Status payload has unexpected size: {}", payload.size)
+            return
+        }
+
+        val promptTone = payload[1].toInt() and 0xff != 0
+        val passwordEnabled = payload[2].toInt() and 0xff != 0
+        val volume = payload[3].toInt() and 0xff
+        val passwordTxt = String(payload.sliceArray(4..7), Charsets.US_ASCII)
+
+        LOG.debug(
+            "Status: volume={}, promptTone={}, passwordEnabled={}, passwordTxt={}",
+            volume,
+            promptTone,
+            passwordEnabled,
+            passwordTxt
+        )
+
+        evaluateGBDeviceEvent(
+            GBDeviceEventUpdatePreferences()
+                .withPreference(DeviceSettingsPreferenceConst.PREF_VOLUME, volume)
+                .withPreference(DeviceSettingsPreferenceConst.PREF_PROMPT_TONE, promptTone)
+                .withPreference(PasswordCapabilityImpl.PREF_PASSWORD_ENABLED, passwordEnabled)
+                .withPreference(PasswordCapabilityImpl.PREF_PASSWORD, passwordTxt)
+        )
+
+        gotStatus = true
+    }
+
+    private fun handleEvent(payload: ByteArray) {
+        if (payload.size != 11) {
+            LOG.warn("Unexpected event payload size: {}", payload.size)
+        }
+
+        val sourceCode = payload[2].toInt() and 0xff
+        val playbackStateCode = payload[3].toInt() and 0xff
+        val playbackModeCode = payload[5].toInt() and 0xff
+        val equalizerCode = payload[6].toInt() and 0xff
+
+        val source = SinilinkMediaSource.fromCode(sourceCode)
+        val playbackState = SinilinkPlaybackState.fromCode(playbackStateCode)
+        val playbackMode = SinilinkPlaybackMode.fromCode(playbackModeCode)
+        val equalizer = SinilinkEqualizer.fromCode(equalizerCode)
+
+        LOG.debug(
+            "Event: source={}, playbackState={}, playbackMode={}, equalizer={}",
+            source,
+            playbackState,
+            playbackMode,
+            equalizer
+        )
+
+        val event = GBDeviceEventUpdatePreferences()
+        source?.let { event.withPreference(DeviceSettingsPreferenceConst.PREF_MEDIA_SOURCE, it.name.lowercase()) }
+        playbackState?.let { device.setExtraInfo("playback_state", it.name) }
+        playbackMode?.let {
+            event.withPreference(
+                DeviceSettingsPreferenceConst.PREF_MEDIA_PLAYBACK_MODE,
+                it.name.lowercase()
+            )
+        }
+        equalizer?.let {
+            event.withPreference(
+                DeviceSettingsPreferenceConst.PREF_HEADPHONES_EQUALIZER,
+                it.name.lowercase()
+            )
+        }
+        evaluateGBDeviceEvent(event)
+
+        // Propagate device state to device card
+        device.sendDeviceUpdateIntent(context)
+
+        val version = String(payload.sliceArray(7 until 11), Charsets.US_ASCII)
+        val versionEvent = GBDeviceEventVersionInfo()
+        versionEvent.fwVersion = version
+        evaluateGBDeviceEvent(versionEvent)
+        gotEvent = true
+    }
+
+    private fun handleVersion(payload: ByteArray) {
+        if (payload.size != 5) {
+            LOG.warn("Unexpected version payload size: {}", payload.size)
+            return
+        }
+
+        val version = String(payload.sliceArray(1 until 5), Charsets.US_ASCII)
+        LOG.debug("Version: {}", version)
+        val event = GBDeviceEventVersionInfo()
+        event.fwVersion = version
+        evaluateGBDeviceEvent(event)
+        gotFirmware = true
+    }
+
+    private fun handleName(payload: ByteArray) {
+        if (payload.size < 11) {
+            LOG.warn("Unexpected name payload size: {}", payload.size)
+            return
+        }
+        val name = String(payload.sliceArray(1 until 11), Charsets.US_ASCII).trimEnd('\u0000')
+        LOG.debug("Device name: {}", name)
+        evaluateGBDeviceEvent(
+            GBDeviceEventUpdatePreferences()
+                .withPreference(DeviceSettingsPreferenceConst.PREF_DEVICE_NAME, name)
+        )
+        gotName = true
+    }
+
+    override fun onSendConfiguration(config: String) {
+        val prefs = Prefs(GBApplication.getDeviceSpecificSharedPrefs(gbDevice.address))
+        when (config) {
+            SinilinkButton.PREVIOUS.name,
+            SinilinkButton.PLAY_PAUSE.name,
+            SinilinkButton.NEXT.name -> {
+                val button = SinilinkButton.valueOf(config)
+                LOG.debug("Sending button: {}", button)
+                sendSimpleCommand(button.code)
+            }
+
+            DeviceSettingsPreferenceConst.PREF_HEADPHONES_EQUALIZER -> {
+                val value = prefs.getString(
+                    DeviceSettingsPreferenceConst.PREF_HEADPHONES_EQUALIZER,
+                    SinilinkEqualizer.NORMAL.name.lowercase()
+                )
+                LOG.debug("Setting equalizer to {}", value)
+                SinilinkEqualizer.fromPreference(value)?.let { sendSimpleCommand(it.code) }
+            }
+
+            DeviceSettingsPreferenceConst.PREF_MEDIA_PLAYBACK_MODE -> {
+                val value = prefs.getString(
+                    DeviceSettingsPreferenceConst.PREF_MEDIA_PLAYBACK_MODE,
+                    SinilinkPlaybackMode.SINGLE_HEAD.name.lowercase()
+                )
+                LOG.debug("Setting playback mode to {}", value)
+                SinilinkPlaybackMode.fromPreference(value)?.let { sendSimpleCommand(it.code) }
+            }
+
+            DeviceSettingsPreferenceConst.PREF_MEDIA_SOURCE -> {
+                val value = prefs.getString(
+                    DeviceSettingsPreferenceConst.PREF_MEDIA_SOURCE,
+                    SinilinkMediaSource.BLUETOOTH.name.lowercase()
+                )
+                LOG.debug("Setting media source to {}", value)
+                SinilinkMediaSource.fromPreference(value)?.let { sendSimpleCommand(it.code) }
+            }
+
+            DeviceSettingsPreferenceConst.PREF_VOLUME -> {
+                val value = prefs.getInt(DeviceSettingsPreferenceConst.PREF_VOLUME, 10).coerceIn(0, 30)
+                LOG.debug("Setting volume to {}", value)
+                sendVolumeCommand(value)
+            }
+
+            DeviceSettingsPreferenceConst.PREF_PROMPT_TONE -> {
+                LOG.debug("Toggling prompt tone")
+                sendSimpleCommand(CMD_PROMPT_TONE_TOGGLE)
+            }
+
+            DeviceSettingsPreferenceConst.PREF_DEVICE_NAME -> {
+                val value = prefs.getString(DeviceSettingsPreferenceConst.PREF_DEVICE_NAME, "XinYi").replace("[^\\x20-\\x7e]", "")
+                LOG.debug("Setting device name to {}", value)
+                if (value.isEmpty() || value.length > 10) {
+                    LOG.warn("Invalid name: {}", value)
+                    return
+                }
+                LOG.debug("Setting name to {}", value)
+                sendTextCommand(CMD_NAME_SET.toByte(), value)
+            }
+
+            PasswordCapabilityImpl.PREF_PASSWORD_ENABLED -> {
+                LOG.debug("Toggling password")
+                sendSimpleCommand(CMD_PASSWORD_TOGGLE)
+            }
+
+            PasswordCapabilityImpl.PREF_PASSWORD -> {
+                val value = prefs.getString(PasswordCapabilityImpl.PREF_PASSWORD, "1234")
+                if (value.length != 4 || !value.isDigitsOnly()) {
+                    LOG.warn("Invalid password: {}", value)
+                    return
+                }
+                LOG.debug("Setting password to {}", value)
+                sendTextCommand(CMD_PASSWORD_SET.toByte(), value)
+            }
+
+            else -> super.onSendConfiguration(config)
+        }
+    }
+
+    private fun sendSimpleCommand(cmd: Int) {
+        val builder = createTransactionBuilder("sinilink_cmd_0x${Integer.toHexString(cmd)}")
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(byteArrayOf(cmd.toByte())))
+        builder.queue()
+    }
+
+    private fun sendVolumeCommand(volume: Int) {
+        val payload = ByteArray(11)
+        payload[0] = CMD_SET_VOLUME.toByte()
+        payload[1] = volume.toByte()
+        val builder = createTransactionBuilder("sinilink_set_volume")
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(payload))
+        builder.queue()
+    }
+
+    private fun sendTextCommand(command: Byte, txt: String) {
+        val buf = ByteBuffer.allocate(11)
+        buf.put(command)
+        buf.put(txt.encodeToByteArray())
+        val builder = createTransactionBuilder("sinilink_set_text")
+        builder.write(UUID_CHARACTERISTIC_SINILINK_TX, *encodeFrame(buf.array()))
+        builder.queue()
+    }
+
+    companion object {
+        private val LOG = LoggerFactory.getLogger(SinilinkSupport::class.java)
+
+        private const val FRAME_SOF = 0x7e
+
+        private const val CMD_EVENT_NOTIFICATION_1 = 0xa8
+        private const val CMD_NAME_GET = 0x20
+        private const val CMD_NAME_SET = 0x1a
+        private const val CMD_PASSWORD_SET = 0x1b
+        private const val CMD_SET_VOLUME = 0x1d
+        private const val CMD_VERSION = 0x1e
+        private const val CMD_STATUS_GET = 0x1f
+        private const val CMD_EVENT_NOTIFICATION_2 = 0xc3
+        private const val CMD_PROMPT_TONE_TOGGLE = 0x18
+        private const val CMD_PASSWORD_TOGGLE = 0x19
+
+        val UUID_SERVICE_SINILINK: UUID = UUID.fromString("0000ae00-0000-1000-8000-00805f9b34fb")
+        val UUID_CHARACTERISTIC_SINILINK_RX: UUID = UUID.fromString("0000ae04-0000-1000-8000-00805f9b34fb")
+        val UUID_CHARACTERISTIC_SINILINK_TX: UUID = UUID.fromString("0000ae10-0000-1000-8000-00805f9b34fb")
+
+        /// Frame format: [0x7e][total_length][payload...][checksum_hi][checksum_lo]
+        /// Checksum = sum of all bytes before checksum, mod 65536, big-endian
+        fun encodeFrame(payload: ByteArray): ByteArray {
+            val totalLen = 2 + payload.size + 2 // SOF + len + payload + checksum(2)
+            val frame = ByteArray(totalLen)
+            frame[0] = FRAME_SOF.toByte()
+            frame[1] = totalLen.toByte()
+            payload.copyInto(frame, 2)
+            val checksum = frame.slice(0 until (totalLen - 2)).sumOf { it.toInt() and 0xff } % 65536
+            frame[totalLen - 2] = (checksum shr 8).toByte()
+            frame[totalLen - 1] = (checksum and 0xff).toByte()
+            return frame
+        }
+    }
+}

app/src/main/res/drawable/ic_device_speaker.xml

@@ -0,0 +1,33 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="45sp"
+    android:height="45sp"
+    android:viewportWidth="30"
+    android:viewportHeight="30">
+    <path
+        android:fillColor="?attr/deviceIconLight"
+        android:pathData="M3.871 3.877h20.925a0.947 0.947 0 0 1 0.948 0.947v20.01a0.947 0.947 0 0 1-0.948 0.948H3.871a0.947 0.947 0 0 1-0.947-0.948V4.824a0.947 0.947 0 0 1 0.947-0.947z"
+        android:strokeWidth="3.57115" />
+    <path
+        android:fillColor="?attr/deviceIconDark"
+        android:pathData="M3.879 3.035h20.925a0.947 0.947 0 0 1 0.947 0.947v20.01a0.947 0.947 0 0 1-0.947 0.948H3.88a0.947 0.947 0 0 1-0.947-0.948V3.982A0.947 0.947 0 0 1 3.88 3.035z"
+        android:strokeWidth="3.57115" />
+    <path
+        android:fillColor="?attr/deviceIconPrimary"
+        android:pathData="M3.871 3.413h20.925a0.947 0.947 0 0 1 0.948 0.947v20.01a0.947 0.947 0 0 1-0.948 0.948H3.871a0.947 0.947 0 0 1-0.947-0.948V4.36A0.947 0.947 0 0 1 3.87 3.413z"
+        android:strokeWidth="3.57115" />
+    <!-- Speaker body + cone, centered horizontally at ~14.3, vertically at 15 -->
+    <path
+        android:fillColor="?attr/deviceIconOnPrimary"
+        android:pathData="M 6,11 L 11,11 L 16,7 L 16,23 L 11,19 L 6,19 Z"
+        android:strokeWidth="1" />
+    <!-- Small sound wave crescent (outer r=3, inner r=2.2, centered at 17.5,15) -->
+    <path
+        android:fillColor="?attr/deviceIconOnPrimary"
+        android:pathData="M 17.5,12 A 3,3 0 0 1 17.5,18 L 17.5,17.2 A 2.2,2.2 0 0 0 17.5,12.8 Z"
+        android:strokeWidth="1" />
+    <!-- Medium sound wave crescent (outer r=5, inner r=4.2, centered at 17.5,15) -->
+    <path
+        android:fillColor="?attr/deviceIconOnPrimary"
+        android:pathData="M 17.5,10 A 5,5 0 0 1 17.5,20 L 17.5,19.2 A 4.2,4.2 0 0 0 17.5,10.8 Z"
+        android:strokeWidth="1" />
+</vector>

app/src/main/res/drawable/ic_skip_next.xml

@@ -0,0 +1,25 @@
+<!--
+  ~ Copyright (C) 2026 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M660,720v-480h80v480h-80ZM220,720v-480l360,240 -360,240ZM300,480ZM300,570 L436,480 300,390v180Z" />
+</vector>

app/src/main/res/drawable/ic_skip_previous.xml

@@ -0,0 +1,25 @@
+<!--
+  ~ Copyright (C) 2026 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M220,720v-480h80v480h-80ZM740,720L380,480l360,-240v480ZM660,480ZM660,570v-180l-136,90 136,90Z" />
+</vector>

app/src/main/res/values/arrays.xml

@@ -5712,4 +5712,51 @@
         <item>MUSIC_CONTROL</item>
         <item>RING_PHONE</item>
     </string-array>
+
+    <string-array name="sinilink_equalizer_names">
+        <item>@string/pref_title_equalizer_normal</item>
+        <item>@string/nothing_equalizer_rock</item>
+        <item>@string/nothing_equalizer_pop</item>
+        <item>@string/nothing_equalizer_classical</item>
+        <item>@string/soundcore_equalizer_preset_jazz</item>
+        <item>@string/equalizer_preset_country</item>
+    </string-array>
+    <string-array name="sinilink_equalizer_values">
+        <item>normal</item>
+        <item>rock</item>
+        <item>pop</item>
+        <item>classic</item>
+        <item>jazz</item>
+        <item>country</item>
+    </string-array>
+
+    <string-array name="sinilink_playback_mode_names">
+        <item>@string/sinilink_playback_mode_list_cycle</item>
+        <item>@string/sinilink_playback_mode_single_head</item>
+        <item>@string/sinilink_playback_mode_single_cycle</item>
+        <item>@string/sinilink_playback_mode_random</item>
+        <item>@string/sinilink_playback_mode_order</item>
+    </string-array>
+    <string-array name="sinilink_playback_mode_values">
+        <item>list_cycle</item>
+        <item>single_head</item>
+        <item>single_cycle</item>
+        <item>random</item>
+        <item>order</item>
+    </string-array>
+
+    <string-array name="sinilink_media_source_names">
+        <item>@string/media_source_tf</item>
+        <item>@string/media_source_usb</item>
+        <item>@string/menuitem_bluetooth</item>
+        <item>@string/media_source_audio_card</item>
+        <item>@string/media_source_aux</item>
+    </string-array>
+    <string-array name="sinilink_media_source_values">
+        <item>tf</item>
+        <item>usb</item>
+        <item>bluetooth</item>
+        <item>audio_card</item>
+        <item>aux</item>
+    </string-array>
 </resources>

app/src/main/res/values/strings.xml

@@ -3544,6 +3544,7 @@
     <string name="soundcore_equalizer_preset_lounge">Lounge</string>
     <string name="soundcore_equalizer_preset_piano">Piano</string>
     <string name="soundcore_equalizer_preset_rnb">R&amp;B</string>
+    <string name="equalizer_preset_country">Country</string>
     <string name="soundcore_equalizer_preset_small_speakers">Small Speakers</string>
     <string name="soundcore_equalizer_preset_spoken_word">Spoken Word</string>
     <string name="soundcore_equalizer_preset_treble_reducer">Treble Reducer</string>
@@ -4630,6 +4631,7 @@
     <string name="cannot_open_help_url">Could not open URL</string>
     <string name="auth_settings">Authentication settings</string>
     <string name="devicetype_shokz_openswim_pro" translatable="false">Shokz OpenSwim Pro</string>
+    <string name="devicetype_sinilink" translatable="false">Sinilink</string>
     <string name="devicetype_onetouch" translatable="false">OneTouch Glucose Meter</string>
     <string name="equalizer_preset_standard">Standard</string>
     <string name="media_playback_mode">Playback mode</string>
@@ -4895,4 +4897,14 @@
     <string name="broadcast_heart_rate_summary">Any nearby device or app can pick up your heart rate.</string>
     <string name="dual_connection_title">Dual connection</string>
     <string name="dual_connection_summary">Allow two apps or devices to connect simultaneously.</string>
+    <string name="sinilink_playback_mode_list_cycle">List cycle</string>
+    <string name="sinilink_playback_mode_single_head">Single (head)</string>
+    <string name="sinilink_playback_mode_single_cycle">Single cycle</string>
+    <string name="sinilink_playback_mode_random">Random</string>
+    <string name="sinilink_playback_mode_order">Order</string>
+    <string name="media_source_tf">TF card</string>
+    <string name="media_source_usb">USB</string>
+    <string name="media_source_audio_card">Audio card</string>
+    <string name="media_source_aux">AUX</string>
+    <string name="sinilink_prompt_tone">Prompt tone</string>
 </resources>

app/src/main/res/xml/devicesettings_sinilink.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <ListPreference
+        android:defaultValue="bluetooth"
+        android:entries="@array/sinilink_media_source_names"
+        android:entryValues="@array/sinilink_media_source_values"
+        android:icon="@drawable/ic_music_note"
+        android:key="pref_media_source"
+        android:title="@string/media_source"
+        app:useSimpleSummaryProvider="true" />
+
+    <ListPreference
+        android:defaultValue="normal"
+        android:entries="@array/sinilink_equalizer_names"
+        android:entryValues="@array/sinilink_equalizer_values"
+        android:icon="@drawable/ic_equalizer"
+        android:key="pref_headphones_equalizer"
+        android:title="@string/prefs_equalizer_preset"
+        app:useSimpleSummaryProvider="true" />
+
+    <ListPreference
+        android:defaultValue="list_cycle"
+        android:entries="@array/sinilink_playback_mode_names"
+        android:entryValues="@array/sinilink_playback_mode_values"
+        android:icon="@drawable/ic_play"
+        android:key="pref_media_playback_mode"
+        android:title="@string/media_playback_mode"
+        app:useSimpleSummaryProvider="true" />
+
+    <SeekBarPreference
+        android:defaultValue="15"
+        android:icon="@drawable/ic_volume_up"
+        android:key="volume"
+        android:max="30"
+        android:title="@string/menuitem_volume"
+        app:showSeekBarValue="true" />
+
+    <SwitchPreferenceCompat
+        android:defaultValue="true"
+        android:icon="@drawable/ic_notifications"
+        android:key="prompt_tone"
+        android:title="@string/sinilink_prompt_tone" />
+
+</androidx.preference.PreferenceScreen>

app/src/test/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractDeviceCoordinatorTest.java

@@ -86,6 +86,7 @@ public class AbstractDeviceCoordinatorTest extends TestBase {
             put("R50Pro", DeviceType.R50PRO);
             put("SBM67", DeviceType.SILVERCREST_SBM_67);
             put("BPM Smart", DeviceType.SANITAS_SBM_67);
+            put("Sinilink-APP", DeviceType.SINILINK); // #6040
             put("R11_0500", DeviceType.YAWELL_R11); // #4711
             put("Edge 2x", DeviceType.GARMIN_EDGE_25); // #5779
             put("Edge 130", DeviceType.GARMIN_EDGE_130); // matrix