diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Constants.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Constants.java
new file mode 100644
index 000000000..0c8b09936
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Constants.java
@@ -0,0 +1,215 @@
+/*  Copyright (C) 2016-2019 Andreas Shimokawa, Carsten Pfeiffer, João
+    Paulo Barraca
+
+    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.makibeshr3;
+
+import java.util.UUID;
+
+public final class MakibesHR3Constants {
+
+
+    public static final UUID UUID_SERVICE = UUID.fromString("6e400001-b5a3-f393-e0a9-e50e24dcca9e");
+    public static final UUID UUID_CHARACTERISTIC_CONTROL = UUID.fromString("6e400002-b5a3-f393-e0a9-e50e24dcca9e");
+
+    // time
+    // mode ab:00:04:ff:7c:80:** (00: 24h, 01: 12h)
+
+    // confirm write?
+    // ab:00:09:ff:52:80:00:13:06:09:0f:0b
+
+    // disconnect?
+    // ab:00:03:ff:ff:80
+
+    // Services and Characteristics
+    // 00001801-0000-1000-8000-00805f9b34fb
+    //  00002a05-0000-1000-8000-00805f9b34fb
+    // 00001800-0000-1000-8000-00805f9b34fb
+    //  00002a00-0000-1000-8000-00805f9b34fb
+    //  00002a01-0000-1000-8000-00805f9b34fb
+    //  00002a02-0000-1000-8000-00805f9b34fb
+    //  00002a04-0000-1000-8000-00805f9b34fb
+    //  00002aa6-0000-1000-8000-00805f9b34fb
+    // 6e400001-b5a3-f393-e0a9-e50e24dcca9e // Nordic UART Service
+    //  6e400002-b5a3-f393-e0a9-e50e24dcca9e //  control
+    //  6e400003-b5a3-f393-e0a9-e50e24dcca9e
+    // 0000fee7-0000-1000-8000-00805f9b34fb
+    //  0000fec9-0000-1000-8000-00805f9b34fb
+    //  0000fea1-0000-1000-8000-00805f9b34fb
+    //  0000fea2-0000-1000-8000-00805f9b34fb
+
+    // Command structure
+    // ab 00 [argument_count] ff [command] 80 [arguments]
+    // where [argument_count] is [arguments].length + 3
+
+    // refresh sends
+    // 51
+    // 52
+    // 93 (CMD_SET_DATE_TIME)
+
+    public static final byte[] DATA_TEMPLATE = {
+            (byte) 0xab,
+            (byte) 0x00,
+            (byte) 0, // argument_count
+            (byte) 0xff,
+            (byte) 0, // command
+            (byte) 0x80
+//           ,arguments
+    };
+
+    public static final int DATA_ARGUMENT_COUNT_INDEX = 2;
+    public static final int DATA_COMMAND_INDEX = 4;
+    public static final int DATA_ARGUMENTS_INDEX = 6;
+
+
+    // 00
+    public static final byte CMD_FACTORY_RESET = (byte) 0x23;
+
+
+    // 00
+    // year (+2000)
+    // month
+    // day
+    // 0b
+    // 00
+    // year (+2000)
+    // month
+    // day
+    // 0b
+    // 19
+    public static final byte CMD_UNKNOWN_51 = (byte) 0x51;
+
+    // this is the last command sent on sync
+    // 00
+    // year (+2000)
+    // month
+    // 14 this isn't the current day
+    // hour (current)
+    // minute (current)
+    public static final byte CMD_UNKNOWN_52 = (byte) 0x52;
+
+
+    public static final byte CMD_FIND_DEVICE = (byte) 0x71;
+
+
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_CALL = (byte) 0x01;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_STOP_CALL = (byte) 0x02;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_MESSAGE = (byte) 0x03;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_QQ = (byte) 0x07;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_WECHAT = (byte) 0x09;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_WHATSAPP = (byte) 0x0a;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_LINE = (byte) 0x0e;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_TWITTER = (byte) 0x0f;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_FACEBOOK = (byte) 0x10;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_FACEBOOK2 = (byte) 0x11;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_WEIBO = (byte) 0x13;
+    public static final byte ARG_SEND_NOTIFICATION_SOURCE_KAKOTALK = (byte) 0x14;
+    // ARG_SET_NOTIFICATION_SOURCE_*
+    // 02
+    // ASCII
+    public static final byte CMD_SEND_NOTIFICATION = (byte) 0x72;
+
+
+    public static final byte ARG_SET_ALARM_REMINDER_REPEAT_WEEKDAY = (byte) 0x1F;
+    public static final byte ARG_SET_ALARM_REMINDER_REPEAT_CUSTOM = (byte) 0x40;
+    public static final byte ARG_SET_ALARM_REMINDER_REPEAT_EVERY_DAY = (byte) 0x7F;
+    public static final byte ARG_SET_ALARM_REMINDER_REPEAT_ONE_TIME = (byte) 0x80;
+    // reminder id starting at 0
+    // enable (00/01)
+    // hour
+    // minute
+    // ARG_SET_ALARM_REMINDER_REPEAT_*
+    public static final byte CMD_SET_ALARM_REMINDER = (byte) 0x73;
+
+
+    public static final byte ARG_SET_PERSONAL_INFORMATION_UNIT_DISTANCE_MILES = (byte) 0x00;
+    public static final byte ARG_SET_PERSONAL_INFORMATION_UNIT_DISTANCE_KILOMETERS = (byte) 0x01;
+    public static final byte ARG_SET_PERSONAL_INFORMATION_UNIT_LENGTH_INCHES = (byte) 0x00;
+    public static final byte ARG_SET_PERSONAL_INFORMATION_UNIT_LENGTH_CENTIMETERS = (byte) 0x01;
+    // step length (in/cm)
+    // age (years)
+    // height (in/cm)
+    // weight (lb/kg)
+    // ARG_SET_PERSONAL_INFORMATION_UNIT_DISTANCE_*
+    // target step count (kilo)
+    // 5a
+    // 82
+    // 3c
+    // 5a
+    // 28
+    // b4
+    // 5d
+    // 64
+    public static final byte CMD_SET_PERSONAL_INFORMATION = (byte) 0x74;
+
+
+    // enable (00/01)
+    // start hour
+    // start minute
+    // end hour
+    // end minute
+    // 2d
+    public static final byte CMD_SET_SEDENTARY_REMINDER = (byte) 0x75;
+
+
+    // enable (00/01)
+    // start hour
+    // start minute
+    // end hour
+    // end minute
+    public static final byte CMD_SET_QUITE_HOURS = (byte) 0x76;
+
+
+    // enable (00/01)
+    public static final byte CMD_SET_HEADS_UP_SCREEN = (byte) 0x77;
+
+
+    // The watch enters photograph mode, but doesn't appear to send a trigger signal.
+    // enable (00/01)
+    public static final byte CMD_SET_PHOTOGRAPH_MODE = (byte) 0x79;
+
+
+    // enable (00/01)
+    public static final byte CMD_SET_LOST_REMINDER = (byte) 0x7a;
+
+
+    // 7b has 1 argument. Looks like enable/disable.
+
+    // 7e has 14 arguments.
+
+    public static final byte ARG_SET_TIMEMODE_24H = 0x00;
+    public static final byte ARG_SET_TIMEMODE_12H = 0x01;
+    // ARG_SET_TIMEMODE_*
+    public static final byte CMD_SET_TIMEMODE = (byte) 0x7c;
+
+
+    // 00
+    // year hi
+    // year lo
+    // month
+    // day
+    // hour
+    // minute
+    // second
+    public static final byte CMD_SET_DATE_TIME = (byte) 0x93;
+
+
+    // If this is sent after {@link CMD_FACTORY_RESET}, it's a shutdown, not a reboot.
+    // Rebooting resets the watch face and wallpaper.
+    public static final byte CMD_REBOOT = (byte) 0xff;
+
+    public static final String PREF_TIMEFORMAT = "makibes_hr3_timeformat";
+}
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Coordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Coordinator.java
new file mode 100644
index 000000000..aeb5a1572
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/makibeshr3/MakibesHR3Coordinator.java
@@ -0,0 +1,182 @@
+/*  Copyright (C) 2017-2019 Daniele Gobbetti, João Paulo Barraca, tiparega
+
+    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.makibeshr3;
+
+/*
+ * @author Alejandro Ladera Chamorro &lt;11555126+tiparega@users.noreply.github.com&gt;
+ */
+
+
+import android.app.Activity;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothGattCharacteristic;
+import android.content.Context;
+import android.net.Uri;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.slf4j.LoggerFactory;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.GBException;
+import nodomain.freeyourgadget.gadgetbridge.R;
+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 nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
+import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
+
+import static nodomain.freeyourgadget.gadgetbridge.GBApplication.getContext;
+
+/**
+ * Pseudo Coordinator for the Q8, a sub type of the HPLUS devices
+ */
+public class MakibesHR3Coordinator extends AbstractDeviceCoordinator {
+
+    protected static Prefs prefs  = GBApplication.getPrefs();
+
+    public static byte getTimeMode(String address) {
+        String tmode = prefs.getString(MakibesHR3Constants.PREF_TIMEFORMAT, getContext().getString(R.string.p_timeformat_24h));
+
+        LoggerFactory.getLogger(MakibesHR3Coordinator.class).debug("tmode is " + tmode);
+
+        if(tmode.equals(getContext().getString(R.string.p_timeformat_24h))) {
+            return MakibesHR3Constants.ARG_SET_TIMEMODE_24H;
+        }else{
+            return MakibesHR3Constants.ARG_SET_TIMEMODE_12H;
+        }
+    }
+
+    @NonNull
+    @Override
+    public DeviceType getSupportedType(GBDeviceCandidate candidate) {
+        String name = candidate.getDevice().getName();
+
+        // TODO:
+        if ((name != null) && name.equals("Y808")) {
+            return DeviceType.MAKIBESHR3;
+        }
+
+        return DeviceType.UNKNOWN;
+    }
+
+    @Override
+    protected void deleteDevice(@NonNull GBDevice gbDevice, @NonNull Device device, @NonNull DaoSession session) throws GBException {
+
+    }
+
+    @Override
+    public int getBondingStyle(GBDevice deviceCandidate) {
+        return BONDING_STYLE_NONE;
+    }
+
+    @Override
+    public boolean supportsCalendarEvents() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsRealtimeData() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsWeather() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsFindDevice() {
+        return true;
+    }
+
+    @Override
+    public DeviceType getDeviceType() {
+        return DeviceType.MAKIBESHR3;
+    }
+
+    @Nullable
+    @Override
+    public Class<? extends Activity> getPairingActivity() {
+        return null;
+    }
+
+    @Override
+    public boolean supportsActivityDataFetching() {
+        return false;
+    }
+
+    @Override
+    public boolean supportsActivityTracking() {
+        return false;
+    }
+
+    @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() {
+        // TODO:
+        return 5;
+    }
+
+    @Override
+    public boolean supportsSmartWakeup(GBDevice device) {
+        return false;
+    }
+
+    @Override
+    public boolean supportsHeartRateMeasurement(GBDevice device) {
+        return true;
+    }
+
+    @Override
+    public String getManufacturer() {
+        return "Makibes";
+    }
+
+    @Override
+    public boolean supportsAppsManagement() {
+        return false;
+    }
+
+    @Override
+    public Class<? extends Activity> getAppsManagementActivity() {
+        return null;
+    }
+
+}
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 d81751ba8..340ce1bfa 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceType.java
@@ -56,6 +56,7 @@ public enum DeviceType {
     CASIOGB6900(120, R.drawable.ic_device_default, R.drawable.ic_device_default_disabled, R.string.devicetype_casiogb6900),
     MISCALE2(131, R.drawable.ic_device_default, R.drawable.ic_device_default_disabled, R.string.devicetype_miscale2),
     BFH16(140, R.drawable.ic_device_default, R.drawable.ic_device_default_disabled, R.string.devicetype_bfh16),
+    MAKIBESHR3(150, R.drawable.ic_device_default, R.drawable.ic_device_hplus_disabled, R.string.devicetype_makibes_hr3),
     MIJIA_LYWSD02(200, R.drawable.ic_device_pebble, R.drawable.ic_device_pebble_disabled, R.string.devicetype_mijia_lywsd02),
     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/service/DeviceSupportFactory.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceSupportFactory.java
index dfa4e83ce..4442691f1 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceSupportFactory.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceSupportFactory.java
@@ -42,6 +42,7 @@ import nodomain.freeyourgadget.gadgetbridge.service.devices.id115.ID115Support;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.jyou.BFH16DeviceSupport;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.jyou.TeclastH30Support;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.liveview.LiveviewSupport;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.makibeshr3.MakibesHR3DeviceSupport;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.miband.MiBandSupport;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.mijia_lywsd02.MijiaLywsd02Support;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.miscale2.MiScale2DeviceSupport;
@@ -195,6 +196,10 @@ public class DeviceSupportFactory {
                         break;
                     case MIJIA_LYWSD02:
                         deviceSupport = new ServiceDeviceSupport(new MijiaLywsd02Support(), EnumSet.of(ServiceDeviceSupport.Flags.BUSY_CHECKING));
+                        break;
+                    case MAKIBESHR3:
+                        deviceSupport = new ServiceDeviceSupport(new MakibesHR3DeviceSupport(), EnumSet.of(ServiceDeviceSupport.Flags.BUSY_CHECKING));
+                        break;
                 }
                 if (deviceSupport != null) {
                     deviceSupport.setContext(gbDevice, mBtAdapter, mContext);
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/makibeshr3/MakibesHR3DeviceSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/makibeshr3/MakibesHR3DeviceSupport.java
new file mode 100644
index 000000000..ecbe3a5ed
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/makibeshr3/MakibesHR3DeviceSupport.java
@@ -0,0 +1,532 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.makibeshr3;
+
+import android.bluetooth.BluetoothGattCharacteristic;
+import android.net.Uri;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import nodomain.freeyourgadget.gadgetbridge.devices.makibeshr3.MakibesHR3Constants;
+import nodomain.freeyourgadget.gadgetbridge.devices.makibeshr3.MakibesHR3Coordinator;
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
+import nodomain.freeyourgadget.gadgetbridge.model.Alarm;
+import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.CallSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.MusicSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.NotificationType;
+import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.Transaction;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
+import nodomain.freeyourgadget.gadgetbridge.service.serial.GBDeviceProtocol;
+
+public class MakibesHR3DeviceSupport extends AbstractBTLEDeviceSupport {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MakibesHR3DeviceSupport.class);
+
+    public BluetoothGattCharacteristic ctrlCharacteristic = null;
+
+    public MakibesHR3DeviceSupport() {
+        super(LOG);
+
+        addSupportedService(MakibesHR3Constants.UUID_SERVICE);
+    }
+
+    @Override
+    public boolean useAutoConnect() {
+        return false;
+    }
+
+    @Override
+    public void onNotification(NotificationSpec notificationSpec) {
+        TransactionBuilder transactionBuilder = this.createTransactionBuilder("onnotificaiton");
+
+        byte sender;
+
+        switch (notificationSpec.type) {
+            case FACEBOOK:
+            case FACEBOOK_MESSENGER:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_FACEBOOK;
+                break;
+            case LINE:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_LINE;
+                break;
+            case TELEGRAM:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_MESSAGE;
+                break;
+            case TWITTER:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_TWITTER;
+                break;
+            case WECHAT:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_WECHAT;
+                break;
+            case WHATSAPP:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_WHATSAPP;
+                break;
+            case KAKAO_TALK:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_KAKOTALK;
+                break;
+
+            default:
+                sender = MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_MESSAGE;
+                break;
+        }
+
+        this.sendNotification(transactionBuilder,
+                sender, notificationSpec.title + ": " + notificationSpec.body);
+
+        try {
+            this.performConnected(transactionBuilder.getTransaction());
+        } catch (Exception ex) {
+            LoggerFactory.getLogger(this.getClass()).error("notification failed");
+        }
+    }
+
+    @Override
+    public void onDeleteNotification(int id) {
+
+    }
+
+    @Override
+    public void onSetTime() {
+        TransactionBuilder transactionBuilder = this.createTransactionBuilder("settime");
+
+        this.setDateTime(transactionBuilder);
+
+        try {
+            this.performConnected(transactionBuilder.getTransaction());
+        } catch (Exception ex) {
+            LoggerFactory.getLogger(this.getClass()).error("factory reset failed");
+        }
+    }
+
+    @Override
+    public void onSetAlarms(ArrayList<? extends Alarm> alarms) {
+
+        TransactionBuilder transactionBuilder = this.createTransactionBuilder("setalarms");
+
+        for (int i = 0; i < alarms.size(); ++i) {
+            Alarm alarm = alarms.get(i);
+
+            // Should we use @alarm.getPosition() rather than @i?
+            this.setAlarmReminder(
+                    transactionBuilder,
+                    i,
+                    alarm.getEnabled(),
+                    alarm.getHour(),
+                    alarm.getMinute(),
+                    MakibesHR3Constants.ARG_SET_ALARM_REMINDER_REPEAT_CUSTOM);
+        }
+
+        try {
+            this.performConnected(transactionBuilder.getTransaction());
+        } catch (Exception ex) {
+            LoggerFactory.getLogger(this.getClass()).error("setalarms failed");
+        }
+    }
+
+    @Override
+    public void onSetCallState(CallSpec callSpec) {
+        TransactionBuilder transactionBuilder = this.createTransactionBuilder("callstate");
+        LOG.debug("callSpec " + callSpec.command);
+        if (callSpec.command == CallSpec.CALL_INCOMING) {
+            this.sendNotification(transactionBuilder, MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_CALL, callSpec.name);
+        } else {
+            this.sendNotification(transactionBuilder, MakibesHR3Constants.ARG_SEND_NOTIFICATION_SOURCE_STOP_CALL, callSpec.name);
+        }
+
+        try {
+            this.performConnected(transactionBuilder.getTransaction());
+        } catch (Exception ex) {
+            LoggerFactory.getLogger(this.getClass()).error("call state failed");
+        }
+    }
+
+    @Override
+    public void onSetCannedMessages(CannedMessagesSpec cannedMessagesSpec) {
+
+    }
+
+    @Override
+    public void onSetMusicState(MusicStateSpec stateSpec) {
+
+    }
+
+    @Override
+    public void onSetMusicInfo(MusicSpec musicSpec) {
+
+    }
+
+    @Override
+    public void onEnableRealtimeSteps(boolean enable) {
+
+    }
+
+    @Override
+    public void onInstallApp(Uri uri) {
+
+    }
+
+    @Override
+    public void onAppInfoReq() {
+
+    }
+
+    @Override
+    public void onAppStart(UUID uuid, boolean start) {
+
+    }
+
+    @Override
+    public void onAppDelete(UUID uuid) {
+
+    }
+
+    @Override
+    public void onAppConfiguration(UUID appUuid, String config, Integer id) {
+
+    }
+
+    @Override
+    public void onAppReorder(UUID[] uuids) {
+
+    }
+
+    @Override
+    public void onFetchRecordedData(int dataTypes) {
+
+    }
+
+    @Override
+    public void onReset(int flags) {
+
+        if ((flags & GBDeviceProtocol.RESET_FLAGS_FACTORY_RESET) != 0) {
+            TransactionBuilder transactionBuilder = this.createTransactionBuilder("reset");
+            this.factoryReset(transactionBuilder);
+
+            try {
+                this.performConnected(transactionBuilder.getTransaction());
+            } catch (Exception ex) {
+                LoggerFactory.getLogger(this.getClass()).error("factory reset failed");
+            }
+        } else if ((flags & GBDeviceProtocol.RESET_FLAGS_REBOOT) != 0) {
+            TransactionBuilder transactionBuilder = this.createTransactionBuilder("reboot");
+            this.reboot(transactionBuilder);
+
+            try {
+                this.performConnected(transactionBuilder.getTransaction());
+            } catch (Exception ex) {
+                LoggerFactory.getLogger(this.getClass()).error("factory reset failed");
+            }
+        }
+    }
+
+    @Override
+    public void onHeartRateTest() {
+
+    }
+
+    @Override
+    public void onEnableRealtimeHeartRateMeasurement(boolean enable) {
+
+    }
+
+    @Override
+    public void onFindDevice(boolean start) {
+        if (!start) {
+            return;
+        }
+
+        TransactionBuilder transactionBuilder = this.createTransactionBuilder("finddevice");
+
+        this.findDevice(transactionBuilder);
+
+        try {
+            this.performConnected(transactionBuilder.getTransaction());
+        } catch (Exception e) {
+            LOG.debug("ERROR");
+        }
+    }
+
+    @Override
+    public void onSetConstantVibration(int integer) {
+
+    }
+
+    @Override
+    public void onScreenshotReq() {
+
+    }
+
+    @Override
+    public void onEnableHeartRateSleepSupport(boolean enable) {
+
+    }
+
+    @Override
+    public void onSetHeartRateMeasurementInterval(int seconds) {
+
+    }
+
+    @Override
+    public void onAddCalendarEvent(CalendarEventSpec calendarEventSpec) {
+
+    }
+
+    @Override
+    public void onDeleteCalendarEvent(byte type, long id) {
+
+    }
+
+    @Override
+    public void onSendConfiguration(String config) {
+
+    }
+
+    @Override
+    public void onReadConfiguration(String config) {
+
+    }
+
+    @Override
+    public void onTestNewFunction() {
+
+    }
+
+    @Override
+    public void onSendWeather(WeatherSpec weatherSpec) {
+
+    }
+
+    private MakibesHR3DeviceSupport sendUserInfo(TransactionBuilder builder) {
+        // builder.write(ctrlCharacteristic, MakibesHR3Constants.CMD_SET_PREF_START);
+        // builder.write(ctrlCharacteristic, MakibesHR3Constants.CMD_SET_PREF_START1);
+
+        syncPreferences(builder);
+
+        // builder.write(ctrlCharacteristic, new byte[]{MakibesHR3Constants.CMD_SET_CONF_END});
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport syncPreferences(TransactionBuilder transaction) {
+
+        this.setTimeMode(transaction);
+        this.setDateTime(transaction);
+        // setDayOfWeek(transaction);
+        // setTimeMode(transaction);
+
+        // setGender(transaction);
+        // setAge(transaction);
+        // setWeight(transaction);
+        // setHeight(transaction);
+
+        // setGoal(transaction);
+        // setLanguage(transaction);
+        // setScreenTime(transaction);
+        // setUnit(transaction);
+        // setAllDayHeart(transaction);
+
+        return this;
+    }
+
+    @Override
+    protected TransactionBuilder initializeDevice(TransactionBuilder builder) {
+        gbDevice.setState(GBDevice.State.INITIALIZING);
+        gbDevice.sendDeviceUpdateIntent(getContext());
+
+        this.ctrlCharacteristic = getCharacteristic(MakibesHR3Constants.UUID_CHARACTERISTIC_CONTROL);
+
+        builder.setGattCallback(this);
+
+        // Allow modifications
+        builder.write(this.ctrlCharacteristic, new byte[]{0x01, 0x00});
+
+        // Initialize device
+        sendUserInfo(builder); //Sync preferences
+
+        gbDevice.setState(GBDevice.State.INITIALIZED);
+        gbDevice.sendDeviceUpdateIntent(getContext());
+
+        getDevice().setFirmwareVersion("N/A");
+        getDevice().setFirmwareVersion2("N/A");
+
+        return builder;
+    }
+
+    /**
+     * @param command
+     * @param data
+     * @return
+     */
+    private byte[] craftData(byte command, byte[] data) {
+        byte[] result = new byte[MakibesHR3Constants.DATA_TEMPLATE.length + data.length];
+
+        for (int i = 0; i < MakibesHR3Constants.DATA_TEMPLATE.length; ++i) {
+            result[i] = MakibesHR3Constants.DATA_TEMPLATE[i];
+        }
+
+        result[MakibesHR3Constants.DATA_ARGUMENT_COUNT_INDEX] = (byte) (data.length + 3);
+        result[MakibesHR3Constants.DATA_COMMAND_INDEX] = command;
+
+        for (int i = 0; i < data.length; ++i) {
+            result[MakibesHR3Constants.DATA_ARGUMENTS_INDEX + i] = data[i];
+        }
+
+        return result;
+    }
+
+
+    private byte[] craftData(byte command) {
+        return this.craftData(command, new byte[]{});
+    }
+
+    private void writeSafe(BluetoothGattCharacteristic characteristic, TransactionBuilder builder, byte[] data) {
+        final int maxMessageLength = 20;
+
+        // For every split, we need 1 byte extra.
+        int extraBytes = (((data.length - maxMessageLength) / maxMessageLength) + 1);
+
+        int totalDataLength = (data.length + extraBytes);
+
+        int segmentCount = (((totalDataLength - 1) / maxMessageLength) + 1);
+
+        byte[] indexedData = new byte[totalDataLength];
+
+        int it = 0;
+        int segmentIndex = 0;
+        for (int i = 0; i < data.length; ++i) {
+            if ((i != 0) && ((it % maxMessageLength) == 0)) {
+                indexedData[it++] = (byte) segmentIndex++;
+            }
+
+            indexedData[it++] = data[i];
+        }
+
+        for (int i = 0; i < segmentCount; ++i) {
+            int segmentStart = (i * maxMessageLength);
+            int segmentLength;
+
+            if (i == (segmentCount - 1)) {
+                segmentLength = (indexedData.length - segmentStart);
+            } else {
+                segmentLength = maxMessageLength;
+            }
+
+            byte[] segment = new byte[segmentLength];
+
+            for (int j = 0; j < segmentLength; ++j) {
+                segment[j] = indexedData[segmentStart + j];
+            }
+
+            builder.write(characteristic, segment);
+        }
+    }
+
+    private MakibesHR3DeviceSupport factoryReset(TransactionBuilder transaction) {
+        transaction.write(this.ctrlCharacteristic, this.craftData(MakibesHR3Constants.CMD_FACTORY_RESET));
+
+        return this.reboot(transaction);
+    }
+
+    private MakibesHR3DeviceSupport findDevice(TransactionBuilder transaction) {
+        transaction.write(this.ctrlCharacteristic, this.craftData(MakibesHR3Constants.CMD_FIND_DEVICE));
+
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport sendNotification(TransactionBuilder transaction,
+                                                     byte source, String message) {
+        byte[] data = new byte[message.length() + 2];
+        data[0] = source;
+        data[1] = (byte) 0x02;
+
+        for (int i = 0; i < message.length(); ++i) {
+            data[i + 2] = (byte) message.charAt(i);
+        }
+
+        this.writeSafe(
+                this.ctrlCharacteristic,
+                transaction,
+                this.craftData(MakibesHR3Constants.CMD_SEND_NOTIFICATION, data));
+
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport setAlarmReminder(TransactionBuilder transaction,
+                                                     int id, boolean enable, int hour, int minute, byte repeat) {
+        transaction.write(this.ctrlCharacteristic,
+                this.craftData(MakibesHR3Constants.CMD_SET_ALARM_REMINDER, new byte[]{
+                        (byte) id,
+                        (byte) (enable ? 0x01 : 0x00),
+                        (byte) hour,
+                        (byte) minute,
+                        repeat
+                }));
+
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport setTimeMode(TransactionBuilder transaction) {
+        byte value = MakibesHR3Coordinator.getTimeMode(getDevice().getAddress());
+
+        byte[] data = this.craftData(MakibesHR3Constants.CMD_SET_TIMEMODE, new byte[]{value});
+
+        transaction.write(this.ctrlCharacteristic, data);
+
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport setDateTime(TransactionBuilder transaction,
+                                                int year,
+                                                int month,
+                                                int day,
+                                                int hour,
+                                                int minute,
+                                                int second) {
+
+        byte[] data = this.craftData(MakibesHR3Constants.CMD_SET_DATE_TIME,
+                new byte[]{
+                        (byte) 0x00,
+                        (byte) (year & 0xff00),
+                        (byte) (year & 0x00ff),
+                        (byte) month,
+                        (byte) day,
+                        (byte) hour,
+                        (byte) minute,
+                        (byte) second
+                });
+
+        transaction.write(this.ctrlCharacteristic, data);
+
+        return this;
+    }
+
+    private MakibesHR3DeviceSupport setDateTime(TransactionBuilder transaction) {
+
+        Calendar calendar = Calendar.getInstance();
+
+        return this.setDateTime(transaction,
+                calendar.get(Calendar.YEAR),
+                calendar.get(Calendar.MONTH) + 1,
+                calendar.get(Calendar.DAY_OF_MONTH),
+                calendar.get(Calendar.HOUR_OF_DAY),
+                calendar.get(Calendar.MINUTE),
+                calendar.get(Calendar.SECOND)
+        );
+    }
+
+    private MakibesHR3DeviceSupport reboot(TransactionBuilder transaction) {
+        transaction.write(this.ctrlCharacteristic, this.craftData(MakibesHR3Constants.CMD_REBOOT));
+
+        return this;
+    }
+}
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 1d6eb6f79..7b65757e1 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/DeviceHelper.java
@@ -45,6 +45,7 @@ import nodomain.freeyourgadget.gadgetbridge.devices.casiogb6900.CasioGB6900Devic
 import nodomain.freeyourgadget.gadgetbridge.devices.hplus.EXRIZUK8Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.hplus.HPlusCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.hplus.MakibesF68Coordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.makibeshr3.MakibesHR3Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.hplus.Q8Coordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.huami.amazfitbip.AmazfitBipCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.huami.amazfitcor.AmazfitCorCoordinator;
@@ -228,6 +229,7 @@ public class DeviceHelper {
         result.add(new CasioGB6900DeviceCoordinator());
         result.add(new BFH16DeviceCoordinator());
         result.add(new MijiaLywsd02Coordinator());
+        result.add(new MakibesHR3Coordinator());
 
         return result;
     }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bccabd969..b19720dd4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -186,6 +186,8 @@
     <string name="pref_title_screentime">Screen on duration</string>
     <string name="prefs_title_all_day_heart_rate">All day heart rate measurement</string>
     <string name="preferences_hplus_settings">HPlus/Makibes settings</string>
+    <!-- Makibes HR3 Preferences -->
+    <string name="preferences_makibes_hr3_settings">Makibes HR3 settings</string>
     <!-- ID115 Preferences -->
     <string name="preferences_id115_settings">ID115 settings</string>
     <string name="prefs_screen_orientation">Screen orientation</string>
@@ -673,6 +675,7 @@
     <string name="devicetype_miscale2">Mi Scale 2</string>
     <string name="devicetype_bfh16">BFH-16</string>
     <string name="devicetype_mijia_lywsd02">Mijia Smart Clock</string>
+    <string name="devicetype_makibes_hr3">Makibes HR3</string>
     <string name="choose_auto_export_location">Choose export location</string>
     <string name="notification_channel_name">Gadgetbridge notifications</string>
     <!-- Menus on the smart device -->
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 0a7ea295e..f1f4ae71c 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -586,6 +586,27 @@
             </PreferenceCategory>
 
         </PreferenceScreen>
+
+        <PreferenceScreen
+            android:icon="@drawable/ic_device_hplus"
+            android:key="pref_key_hplus"
+            android:title="@string/preferences_makibes_hr3_settings">
+            <PreferenceCategory
+                android:key="pref_category_makibes_hr3_general"
+                android:title="@string/pref_header_general">
+
+                <ListPreference
+                    android:defaultValue="24h"
+                    android:entries="@array/pref_timeformat_entries"
+                    android:entryValues="@array/pref_timeformat_values"
+                    android:key="makibes_hr3_timeformat"
+                    android:title="@string/pref_title_timeformat"
+                    android:summary="%s" />
+
+            </PreferenceCategory>
+
+        </PreferenceScreen>
+
         <PreferenceScreen
             android:icon="@drawable/ic_device_h30_h10"
             android:key="pref_key_id115"