diff --git a/src/main/java/device/radioPlayer/RadioPlayer.java b/src/main/java/device/radioPlayer/RadioPlayer.java
index 5ef8556..2b91e3e 100644
--- a/src/main/java/device/radioPlayer/RadioPlayer.java
+++ b/src/main/java/device/radioPlayer/RadioPlayer.java
@@ -22,6 +22,7 @@ public class RadioPlayer implements Device {
     LocalDateTime now = LocalDateTime.now();
     int hour = now.getHour();
     int Lautstaerke = 0;
+    int savedVolume;
     String playedStation = "";
 
     public String getYouFMInfoByTime(int x) {
@@ -193,12 +194,15 @@ public class RadioPlayer implements Device {
 
     @Override
     public String mute() {
-        return null;
+        savedVolume = getVolume();
+        setLautstaerke(0);
+        return "RadioPlayer is muted now";
     }
 
     @Override
     public String unmute() {
-        return null;
+        setLautstaerke(savedVolume);
+        return ("RadioPlayer is unmuted Volume is set to " + getVolume());
     }
 
 
diff --git a/src/test/java/device/radioPlayer/RadioPlayerTest.java b/src/test/java/device/radioPlayer/RadioPlayerTest.java
index 4de54c2..ac5eefc 100644
--- a/src/test/java/device/radioPlayer/RadioPlayerTest.java
+++ b/src/test/java/device/radioPlayer/RadioPlayerTest.java
@@ -342,4 +342,35 @@ class RadioPlayerTest {
                 Arguments.of("Test for return regional playlist", rp1, "region", rp1.regionPlaylist.toArray(new String[0]))
         );
     }
+
+    @ParameterizedTest
+    @MethodSource("muteOptions")
+    void testMute(String testName, String testTyp, RadioPlayer testRp, int expectedResult) {
+        int volume;
+        if (testTyp.equals("actual")) volume = testRp.getVolume();
+        else volume = testRp.savedVolume;
+        assertThat(volume).describedAs(testName).isEqualTo(expectedResult);
+    }
+
+    static Stream<Arguments> muteOptions() {
+        RadioPlayer rp = new RadioPlayer();
+        rp.setLautstaerke(25);
+        rp.mute();
+        RadioPlayer rp1 = new RadioPlayer();
+        rp1.setLautstaerke(30);
+        rp1.mute();
+
+        return Stream.of(
+                Arguments.of("Test for mute RadioPlayer if volume is actually 0", "actual", rp, 0),
+                Arguments.of("Test for mute RadioPlayer if volume is saved before muting", "saved", rp1, 30)
+        );
+    }
+    @Test
+    void TestUnmute() {
+        RadioPlayer rp = new RadioPlayer();
+        rp.setLautstaerke(40);
+        rp.mute();
+        rp.unmute();
+        assertThat(rp.getVolume()).describedAs("Test if unmute is setting the saved volume").isEqualTo(rp.savedVolume);
+    }
 }
\ No newline at end of file