diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Constants.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Constants.java
index 5f44df90c..be1d2e91e 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Constants.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Constants.java
@@ -25,6 +25,7 @@ public final class TLW64Constants {
     public static final UUID UUID_CHARACTERISTIC_CONTROL = UUID.fromString("000033f1-0000-1000-8000-00805f9b34fb");
 
     // Command bytes
+    public static final byte CMD_DATETIME = (byte) 0xa3;
     public static final byte CMD_ALARM = (byte) 0xab;
 
 }
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/tlw64/TLW64Support.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/tlw64/TLW64Support.java
index 169d1741b..d2667234a 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/tlw64/TLW64Support.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/tlw64/TLW64Support.java
@@ -21,12 +21,15 @@ package nodomain.freeyourgadget.gadgetbridge.service.devices.tlw64;
 
 import android.bluetooth.BluetoothGattCharacteristic;
 import android.net.Uri;
+import android.widget.Toast;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
 import java.util.UUID;
 
 import nodomain.freeyourgadget.gadgetbridge.devices.tlw64.TLW64Constants;
@@ -42,6 +45,7 @@ import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceStateAction;
+import nodomain.freeyourgadget.gadgetbridge.util.GB;
 
 public class TLW64Support extends AbstractBTLEDeviceSupport {
 
@@ -62,6 +66,8 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
 
         ctrlCharacteristic = getCharacteristic(TLW64Constants.UUID_CHARACTERISTIC_CONTROL);
 
+        setTime(builder);
+
         builder.add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZED, getContext()));
 
         LOG.info("Initialization Done");
@@ -86,7 +92,13 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
 
     @Override
     public void onSetTime() {
-
+        try {
+            TransactionBuilder builder = performInitialized("setTime");
+            setTime(builder);
+            builder.queue(getQueue());
+        } catch (IOException e) {
+            GB.toast(getContext(), "Error setting time: " + e.getLocalizedMessage(), Toast.LENGTH_LONG, GB.ERROR);
+        }
     }
 
     @Override
@@ -245,4 +257,19 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
             LOG.warn("Unable to set vibration", e);
         }
     }
+
+    private void setTime(TransactionBuilder transaction) {
+        Calendar c = GregorianCalendar.getInstance();
+        byte[] datetimeBytes = new byte[]{
+                TLW64Constants.CMD_DATETIME,
+                (byte) (c.get(Calendar.YEAR) / 256),
+                (byte) (c.get(Calendar.YEAR) % 256),
+                (byte) (c.get(Calendar.MONTH) + 1),
+                (byte) c.get(Calendar.DAY_OF_MONTH),
+                (byte) c.get(Calendar.HOUR_OF_DAY),
+                (byte) c.get(Calendar.MINUTE),
+                (byte) c.get(Calendar.SECOND)
+        };
+        transaction.write(ctrlCharacteristic, datetimeBytes);
+    }
 }