1 Compatible with Fire TV Stick Lite Fire TV Stick 2nd Gen and later Fire TV Stick 4K Fire TV Cube 1st Gen and later and Fire TV 3rd Gen Pendant Design.2 Not compatible with Fire TV 1st and 2nd Gen Fire TV Stick 1st Gen or Fire TV Edition smart TVs.3 Control your compatible TV soundbar and receiver with dedicated power volume and mute buttons.4 With voice control function you can control your device through Alexa at any time.5 There are 4 app buttons allowing you to reach your favorite APP with one click. Compatible with Below Models Amazon Fire TV Stick 4K Amazon Fire TV Stick Lite Amazon Fire TV Stick 4K Max Amazon Fire TV Stick 2nd Gen Amazon Fire TV Stick 3rd Gen Amazon Fire TV Cube 1st Gen Amazon Fire TV Cube 2nd Gen Amazon Fire TV 3rd Gen Pendant Design.