diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/qhybrid/QHybridCoordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/qhybrid/QHybridCoordinator.java
index 0ccc5c76f..6e85dd6a7 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/qhybrid/QHybridCoordinator.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/qhybrid/QHybridCoordinator.java
@@ -229,6 +229,11 @@ public class QHybridCoordinator extends AbstractBLEDeviceCoordinator {
         return true;
     }
 
+    @Override
+    public boolean supportsCalendarEvents() {
+        return isHybridHR();
+    }
+
     @Override
     protected void deleteDevice(@NonNull GBDevice gbDevice, @NonNull Device device, @NonNull DaoSession session) throws GBException {
 
@@ -267,6 +272,7 @@ public class QHybridCoordinator extends AbstractBLEDeviceCoordinator {
         // Settings applicable to all firmware versions
         generic.add(R.xml.devicesettings_fossilhybridhr_calibration);
         generic.add(R.xml.devicesettings_fossilhybridhr_navigation);
+        generic.add(R.xml.devicesettings_sync_calendar);
         final List<Integer> health = deviceSpecificSettings.addRootScreen(DeviceSpecificSettingsScreen.HEALTH);
         health.add(R.xml.devicesettings_fossilhybridhr_workout_detection);
         health.add(R.xml.devicesettings_inactivity);
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/QHybridSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/QHybridSupport.java
index 19fbb40b7..cc480d11b 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/QHybridSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/QHybridSupport.java
@@ -55,6 +55,7 @@ import nodomain.freeyourgadget.gadgetbridge.externalevents.NotificationListener;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.model.Alarm;
 import nodomain.freeyourgadget.gadgetbridge.model.BatteryState;
+import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.CallSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.GenericItem;
@@ -851,4 +852,14 @@ public class QHybridSupport extends QHybridBaseSupport {
     public void onSetNavigationInfo(NavigationInfoSpec navigationInfoSpec) {
         ((FossilHRWatchAdapter) watchAdapter).onSetNavigationInfo(navigationInfoSpec);
     }
+
+    @Override
+    public void onAddCalendarEvent(CalendarEventSpec calendarEventSpec) {
+        ((FossilHRWatchAdapter) watchAdapter).onSendCalendar();
+    }
+
+    @Override
+    public void onDeleteCalendarEvent(byte type, long id) {
+        ((FossilHRWatchAdapter) watchAdapter).onSendCalendar();
+    }
 }
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/adapter/fossil_hr/FossilHRWatchAdapter.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/adapter/fossil_hr/FossilHRWatchAdapter.java
index 46125d7ca..019e7dc89 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/adapter/fossil_hr/FossilHRWatchAdapter.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/adapter/fossil_hr/FossilHRWatchAdapter.java
@@ -78,7 +78,10 @@ import java.nio.charset.StandardCharsets;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.Calendar;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -105,9 +108,9 @@ import nodomain.freeyourgadget.gadgetbridge.devices.qhybrid.HybridHRActivitySamp
 import nodomain.freeyourgadget.gadgetbridge.devices.qhybrid.HybridHRSpo2SampleProvider;
 import nodomain.freeyourgadget.gadgetbridge.devices.qhybrid.NotificationHRConfiguration;
 import nodomain.freeyourgadget.gadgetbridge.entities.Device;
-import nodomain.freeyourgadget.gadgetbridge.entities.User;
 import nodomain.freeyourgadget.gadgetbridge.entities.HybridHRActivitySample;
 import nodomain.freeyourgadget.gadgetbridge.entities.HybridHRSpo2Sample;
+import nodomain.freeyourgadget.gadgetbridge.entities.User;
 import nodomain.freeyourgadget.gadgetbridge.externalevents.NotificationListener;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceApp;
@@ -181,9 +184,12 @@ import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
 import nodomain.freeyourgadget.gadgetbridge.util.StringUtils;
 import nodomain.freeyourgadget.gadgetbridge.util.UriHelper;
 import nodomain.freeyourgadget.gadgetbridge.util.Version;
+import nodomain.freeyourgadget.gadgetbridge.util.calendar.CalendarEvent;
+import nodomain.freeyourgadget.gadgetbridge.util.calendar.CalendarManager;
 
 public class FossilHRWatchAdapter extends FossilWatchAdapter {
     public static final int MESSAGE_WHAT_VOICE_DATA_RECEIVED = 0;
+    private static final int MAX_CALENDAR_ITEMS = 10;
 
     private byte[] phoneRandomNumber;
     private byte[] watchRandomNumber;
@@ -215,6 +221,8 @@ public class FossilHRWatchAdapter extends FossilWatchAdapter {
 
     private Version cleanFirmwareVersion = null;
 
+    private final Set<CalendarEvent> lastSync = new HashSet<>();
+
     ServiceConnection voiceServiceConnection = new ServiceConnection() {
         @Override
         public void onServiceConnected(ComponentName name, IBinder service) {
@@ -1609,6 +1617,68 @@ public class FossilHRWatchAdapter extends FossilWatchAdapter {
         }
     }
 
+    public void onSendCalendar() {
+        if (!getDeviceSpecificPreferences().getBoolean("sync_calendar", false)) {
+            LOG.debug("Ignoring calendar sync request, sync is disabled");
+            return;
+        }
+
+        final CalendarManager upcomingEvents = new CalendarManager(getContext(), getDeviceSupport().getDevice().getAddress());
+        final List<CalendarEvent> calendarEvents = upcomingEvents.getCalendarEventList();
+
+        final Set<CalendarEvent> thisSync = new HashSet<>();
+        int nEvents = 0;
+
+        for (final CalendarEvent calendarEvent : calendarEvents) {
+            if (++nEvents > MAX_CALENDAR_ITEMS) {
+                LOG.warn("Syncing only first {} events of {}", MAX_CALENDAR_ITEMS, calendarEvents.size());
+                break;
+            }
+            thisSync.add(calendarEvent);
+        }
+
+        if (thisSync.equals(lastSync)) {
+            LOG.debug("Already synced this set of events, won't send to device");
+            return;
+        }
+
+        lastSync.clear();
+        lastSync.addAll(thisSync);
+
+        List<CalendarEvent> sortedEventList = new ArrayList<>(thisSync);
+        Collections.sort(sortedEventList, Comparator.comparingLong(CalendarEvent::getBegin));
+
+        LOG.debug("Syncing {} calendar events", sortedEventList.size());
+
+        try {
+            JSONArray items = new JSONArray();
+            for(CalendarEvent event : sortedEventList) {
+                JSONArray reminders = new JSONArray();
+                for (long reminder : event.getRemindersAbsoluteTs()) {
+                    reminders.put(reminder / 1000);
+                }
+                items.put(new JSONObject()
+                        .put("id", event.getId())
+                        .put("title", event.getTitle())
+                        .put("desc", event.getDescription())
+                        .put("start", event.getBeginSeconds())
+                        .put("end", event.getEndSeconds())
+                        .put("reminders", reminders)
+                );
+            }
+            JSONObject calendarObj = new JSONObject()
+                    .put("res", new JSONObject()
+                            .put("set", new JSONObject()
+                                    .put("calendarApp._.config.events", items)
+                            )
+                    );
+
+            queueWrite(new JsonPutRequest(calendarObj, this));
+        } catch (JSONException e) {
+            LOG.error("Error sending calendar events: ", e);
+        }
+    }
+
     @Override
     public void factoryReset() {
         queueWrite(new FactoryResetRequest());