diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
index 88f596bd3..a81ab8f1f 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
@@ -43,5 +43,6 @@ public class DeviceSettingsPreferenceConst {
     public static final String PREF_ALTITUDE_CALIBRATE = "pref_sensors_altitude";
     public static final String PREF_LONGSIT_PERIOD = "pref_longsit_period";
     public static final String PREF_LONGSIT_SWITCH = "pref_longsit_switch";
+    public static final String PREF_LONGSIT_SWITCH_NOSHED = "screen_longsit_noshed";
     public static final String PREF_DO_NOT_DISTURB_NOAUTO = "do_not_disturb_no_auto";
 }
\ No newline at end of file
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Coordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Coordinator.java
index fb057f51b..d2b47f786 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Coordinator.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/tlw64/TLW64Coordinator.java
@@ -26,6 +26,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 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;
@@ -138,4 +139,13 @@ public class TLW64Coordinator extends AbstractDeviceCoordinator {
     public boolean supportsFindDevice() {
         return true;
     }
-}
+
+    @Override
+    public int[] getSupportedDeviceSpecificSettings(GBDevice device) {
+        return new int[]{
+                R.xml.devicesettings_liftwrist_display_noshed,
+                R.xml.devicesettings_longsit_noshed,
+                R.xml.devicesettings_timeformat
+        };
+    }
+}
\ No newline at end of file
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 1a905894f..7576a2a58 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
@@ -39,6 +39,7 @@ import java.util.UUID;
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.activities.SettingsActivity;
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst;
 import nodomain.freeyourgadget.gadgetbridge.database.DBHandler;
 import nodomain.freeyourgadget.gadgetbridge.database.DBHelper;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventBatteryInfo;
@@ -468,11 +469,24 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
         } else {
             displayBytes[1] = 2;
         }
-        if (DateFormat.is24HourFormat(getContext())) {
-            displayBytes[2] = 1;
-        } else {
-            displayBytes[2] = 2;
+
+        String timeformat = GBApplication.getDeviceSpecificSharedPrefs(gbDevice.getAddress()).getString(DeviceSettingsPreferenceConst.PREF_TIMEFORMAT, "auto");
+        switch (timeformat) {
+            case "24h":
+                displayBytes[2] = 1;
+                break;
+            case "am/pm":
+                displayBytes[2] = 2;
+                break;
+            case "auto":
+            default:
+                if (DateFormat.is24HourFormat(getContext())) {
+                    displayBytes[2] = 1;
+                } else {
+                    displayBytes[2] = 2;
+                }
         }
+
         transaction.write(ctrlCharacteristic, displayBytes);
         return;
     }
@@ -493,7 +507,7 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
                 (byte) 0x00,  // unknown
                 (byte) (activityUser.getStepsGoal() / 256),
                 (byte) (activityUser.getStepsGoal() % 256),
-                (byte) 0x01,  // raise hand to turn on screen, ON = 1, OFF = 0
+                (byte) 0x00,  // raise hand to turn on screen, ON = 1, OFF = 0
                 (byte) 0xff,  // unknown
                 (byte) 0x00,  // unknown
                 (byte) activityUser.getAge(),
@@ -502,6 +516,10 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
                 (byte) 0x02   // unknown
         };
 
+        if (GBApplication.getDeviceSpecificSharedPrefs(gbDevice.getAddress()).getBoolean(DeviceSettingsPreferenceConst.PREF_LIFTWRIST_NOSHED, false)) {
+            userBytes[10] = (byte) 0x01;
+        }
+
         if (activityUser.getGender() == ActivityUser.GENDER_FEMALE) {
             userBytes[14] = 2; // female
             // default and factor from https://livehealthy.chron.com/determine-stride-pedometer-height-weight-4518.html
@@ -520,7 +538,7 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
         builder.write(ctrlCharacteristic, userBytes);
 
         // device settings
-        builder.write(ctrlCharacteristic, new byte[]{
+        byte[] deviceBytes = new byte[]{
                 TLW64Constants.CMD_DEVICE_SETTINGS,
                 (byte) 0x00,   // 1 - turns on inactivity alarm
                 (byte) 0x3c,   // unknown, sniffed by original app
@@ -528,7 +546,13 @@ public class TLW64Support extends AbstractBTLEDeviceSupport {
                 (byte) 0x03,   // unknown, sniffed by original app
                 (byte) 0x01,   // unknown, sniffed by original app
                 (byte) 0x00    // unknown, sniffed by original app
-        });
+        };
+
+        if (GBApplication.getDeviceSpecificSharedPrefs(gbDevice.getAddress()).getBoolean(DeviceSettingsPreferenceConst.PREF_LONGSIT_SWITCH_NOSHED, false)) {
+            deviceBytes[1] = (byte) 0x01;
+        }
+
+        builder.write(ctrlCharacteristic, deviceBytes);
     }
 
     private void showIcon(int iconId) {
diff --git a/app/src/main/res/xml/devicesettings_longsit_noshed.xml b/app/src/main/res/xml/devicesettings_longsit_noshed.xml
new file mode 100644
index 000000000..71e346fdb
--- /dev/null
+++ b/app/src/main/res/xml/devicesettings_longsit_noshed.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <SwitchPreference
+        android:icon="@drawable/ic_activity_sleep"
+        android:defaultValue="false"
+        android:key="screen_longsit_noshed"
+        android:title="@string/mi2_prefs_inactivity_warnings"
+        android:summary="@string/mi2_prefs_inactivity_warnings_summary"/>
+</androidx.preference.PreferenceScreen>