diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunConstants.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunConstants.java
new file mode 100644
index 000000000..b3d312391
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunConstants.java
@@ -0,0 +1,31 @@
+/*  Copyright (C) 2016-2020 Andreas Shimokawa, Carsten Pfeiffer, Daniele
+    Gobbetti
+    Copyright (C) 2020 Yukai Li
+
+    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 <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.devices.lefun;
+
+import java.util.UUID;
+
+import static nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport.BASE_UUID;
+
+public class LefunConstants {
+    public static final UUID UUID_SERVICE_LEFUN = UUID.fromString(String.format(BASE_UUID, "18D0"));
+
+    public static final String ADVERTISEMENT_NAME = "Lefun";
+    public static final String MANUFACTURER_NAME = "Teng Jin Da";
+    public static int NUM_ALARM_SLOTS = 5;
+}
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunDeviceCoordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunDeviceCoordinator.java
new file mode 100644
index 000000000..fe9aee215
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/lefun/LefunDeviceCoordinator.java
@@ -0,0 +1,157 @@
+/*  Copyright (C) 2016-2020 Andreas Shimokawa, Carsten Pfeiffer, Daniele
+    Gobbetti
+    Copyright (C) 2020 Yukai Li
+
+    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 <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.devices.lefun;
+
+import android.app.Activity;
+import android.content.Context;
+import android.net.Uri;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import nodomain.freeyourgadget.gadgetbridge.GBException;
+import nodomain.freeyourgadget.gadgetbridge.devices.AbstractDeviceCoordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.InstallHandler;
+import nodomain.freeyourgadget.gadgetbridge.devices.SampleProvider;
+import nodomain.freeyourgadget.gadgetbridge.entities.DaoSession;
+import nodomain.freeyourgadget.gadgetbridge.entities.Device;
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceCandidate;
+import nodomain.freeyourgadget.gadgetbridge.model.ActivitySample;
+import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
+
+import static nodomain.freeyourgadget.gadgetbridge.devices.lefun.LefunConstants.ADVERTISEMENT_NAME;
+import static nodomain.freeyourgadget.gadgetbridge.devices.lefun.LefunConstants.MANUFACTURER_NAME;
+import static nodomain.freeyourgadget.gadgetbridge.devices.lefun.LefunConstants.NUM_ALARM_SLOTS;
+
+public class LefunDeviceCoordinator extends AbstractDeviceCoordinator {
+    @Override
+    protected void deleteDevice(@NonNull GBDevice gbDevice, @NonNull Device device, @NonNull DaoSession session) throws GBException {
+
+    }
+
+    @Override
+    public int getBondingStyle() {
+        return BONDING_STYLE_NONE;
+    }
+
+    @NonNull
+    @Override
+    public DeviceType getSupportedType(GBDeviceCandidate candidate) {
+        // There's a bunch of other names other than "Lefun", but let's just focus on one for now.
+        if (ADVERTISEMENT_NAME.equals(candidate.getName())) {
+            // The device does not advertise service UUIDs, so can't check whether it supports
+            // the proper service. We can check that it doesn't advertise any services, though.
+            // We're actually supposed to check for presence of the string "TJDR" within the
+            // manufacturer specific data, which consists of the device's MAC address and said
+            // string. But we're not being given it, so *shrug*.
+            if (candidate.getServiceUuids().length == 0) {
+                return DeviceType.LEFUN;
+            }
+        }
+
+        return DeviceType.UNKNOWN;
+    }
+
+    @Override
+    public DeviceType getDeviceType() {
+        return DeviceType.LEFUN;
+    }
+
+    @Nullable
+    @Override
+    public Class<? extends Activity> getPairingActivity() {
+        return null;
+    }
+
+    @Override
+    public boolean supportsActivityDataFetching() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsActivityTracking() {
+        return true;
+    }
+
+    @Override
+    public SampleProvider<? extends ActivitySample> getSampleProvider(GBDevice device, DaoSession session) {
+        return null;
+    }
+
+    @Override
+    public InstallHandler findInstallHandler(Uri uri, Context context) {
+        return null;
+    }
+
+    @Override
+    public boolean supportsScreenshots() {
+        return false;
+    }
+
+    @Override
+    public int getAlarmSlotCount() {
+        return NUM_ALARM_SLOTS;
+    }
+
+    @Override
+    public boolean supportsSmartWakeup(GBDevice device) {
+        return false;
+    }
+
+    @Override
+    public boolean supportsHeartRateMeasurement(GBDevice device) {
+        return true;
+    }
+
+    @Override
+    public String getManufacturer() {
+        return MANUFACTURER_NAME;
+    }
+
+    @Override
+    public boolean supportsAppsManagement() {
+        return false;
+    }
+
+    @Override
+    public Class<? extends Activity> getAppsManagementActivity() {
+        return null;
+    }
+
+    @Override
+    public boolean supportsCalendarEvents() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsRealtimeData() {
+        return true;
+    }
+
+    @Override
+    public boolean supportsWeather() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsFindDevice() {
+        return true;
+    }
+}
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java
index e3080ff83..02607887f 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java
@@ -73,6 +73,7 @@ public enum DeviceType {
     TLW64(180, R.drawable.ic_device_default, R.drawable.ic_device_default_disabled, R.string.devicetype_tlw64),
     PINETIME_JF(190, R.drawable.ic_device_pinetime, R.drawable.ic_device_pinetime_disabled, R.string.devicetype_pinetime_jf),
     MIJIA_LYWSD02(200, R.drawable.ic_device_pebble, R.drawable.ic_device_pebble_disabled, R.string.devicetype_mijia_lywsd02),
+    LEFUN(210, R.drawable.ic_device_h30_h10, R.drawable.ic_device_h30_h10_disabled, R.string.devicetype_lefun),
     ITAG(250, R.drawable.ic_device_itag, R.drawable.ic_device_itag_disabled, R.string.devicetype_itag),
     VIBRATISSIMO(300, R.drawable.ic_device_lovetoy, R.drawable.ic_device_lovetoy_disabled, R.string.devicetype_vibratissimo),
     TEST(1000, R.drawable.ic_device_default, R.drawable.ic_device_default_disabled, R.string.devicetype_test);
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java
index 5956d7339..921702b23 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java
@@ -68,6 +68,7 @@ import nodomain.freeyourgadget.gadgetbridge.devices.itag.ITagCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.jyou.BFH16DeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.jyou.TeclastH30.TeclastH30Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.jyou.y5.Y5Coordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.lefun.LefunDeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.lenovo.watchxplus.WatchXPlusDeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.liveview.LiveviewCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.makibeshr3.MakibesHR3Coordinator;
@@ -256,6 +257,7 @@ public class DeviceHelper {
         result.add(new TLW64Coordinator());
         result.add(new PineTimeJFCoordinator());
         result.add(new SG2Coordinator());
+        result.add(new LefunDeviceCoordinator());
 
         return result;
     }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d142488ad..575016309 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -784,6 +784,7 @@
     <string name="notification_channel_high_priority_name">Gadgetbridge notifications high priority</string>
     <string name="devicetype_amazfit_gts">Amazfit GTS</string>
     <string name="devicetype_sg2">Lemfo SG2</string>
+    <string name="devicetype_lefun">Lefun</string>
     <!-- Menus on the smart device -->
     <string name="menuitem_shortcut_alipay">Alipay (Shortcut)</string>
     <string name="menuitem_shortcut_weather">Weather (Shortcut)</string>