diff --git a/app-glasses/src/main/AndroidManifest.xml b/app-glasses/src/main/AndroidManifest.xml
index f14276a..733063b 100644
--- a/app-glasses/src/main/AndroidManifest.xml
+++ b/app-glasses/src/main/AndroidManifest.xml
@@ -12,13 +12,20 @@
     <application
         android:name=".GlassesApp"
         android:label="ViewMate Glasses"
-        android:theme="@style/Theme.AppCompat"
+        android:theme="@style/Theme.ViewMateGlasses"
+        android:hardwareAccelerated="true"
         android:allowBackup="true"
         android:usesCleartextTraffic="true">
 
+        <!-- indicate this is an app that supports RayNeoX2 glasses -->
+        <meta-data
+            android:name="com.rayneo.mercury.app"
+            android:value="true" />
+
         <activity
             android:name=".MainActivity"
-            android:exported="true">
+            android:exported="true"
+            android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
diff --git a/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/GlassesApp.kt b/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/GlassesApp.kt
index 04821f5..bbc618e 100644
--- a/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/GlassesApp.kt
+++ b/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/GlassesApp.kt
@@ -1,6 +1,7 @@
 package pw.binom.viewmate.glasses
 
 import android.app.Application
+import android.content.Context
 import com.rayneo.arsdk.android.MercurySDK
 import java.io.File
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -28,12 +29,24 @@ class GlassesApp : Application() {
     lateinit var downloadManager: GlassesDownloadManager
         private set
 
-    /** Масштаб экрана очков (0.5..1.0); задаётся пультом телефона. */
+    private val prefs by lazy {
+        getSharedPreferences("viewmate_prefs", Context.MODE_PRIVATE)
+    }
+
+    /** Масштаб экрана очков (0.5..1.0). Загружается в onCreate (prefs — после привязки контекста). */
     val scale = MutableStateFlow(1f)
 
+    /** Применить и сохранить масштаб. */
+    fun applyScale(value: Float) {
+        val v = value.coerceIn(0.5f, 1f)
+        scale.value = v
+        prefs.edit().putFloat("scale", v).apply()
+    }
+
     override fun onCreate() {
         super.onCreate()
         instance = this
+        scale.value = prefs.getFloat("scale", 1f).coerceIn(0.5f, 1f)
         MercurySDK.init(this)
         movieController = MovieController(applicationContext)
         movieController.eventLogger = { msg -> logToFile("mc: $msg") }
diff --git a/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/HostConnection.kt b/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/HostConnection.kt
index 947f5f6..9d798ac 100644
--- a/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/HostConnection.kt
+++ b/app-glasses/src/main/kotlin/pw/binom/viewmate/glasses/HostConnection.kt
@@ -223,7 +223,7 @@ class HostConnection(
             is SetMode -> addMessage("SetMode: ${msg.mode}")
 
             is SetScale -> {
-                GlassesApp.instance.scale.value = msg.scale.coerceIn(0.5f, 1f)
+                GlassesApp.instance.applyScale(msg.scale)
                 log("app", "scale → ${msg.scale}")
             }
 
diff --git a/app-glasses/src/main/res/values/themes.xml b/app-glasses/src/main/res/values/themes.xml
new file mode 100644
index 0000000..95b9796
--- /dev/null
+++ b/app-glasses/src/main/res/values/themes.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Тема очков: чёрный фон окна, полноэкранно, без заголовка. -->
+    <style name="Theme.ViewMateGlasses" parent="Theme.AppCompat.NoActionBar">
+        <item name="android:windowBackground">@android:color/black</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowNoTitle">true</item>
+    </style>
+</resources>