Steering wheel controller support next/previous/play/receive phone call/pause/decline phone call/vol-/vol+. Multi-functional key is convenient for you to adjust the music video broadcast of your car GPS multimedia navigation device flexibly All keys support custom learning: music addition and subtraction, previous/next song, music play/pause, one click mute or resume, answer and hang up phone call, back to main menu, open voice/navigation/360 backup camera and custom APP. Note: This steering wheel control buttons only can work with MekedeTech DUDUAUTO series head unit, can not with other aftermarket head units.