APP Control: Free download App “HappyLighting” from QR code (compatible with both iPhone and Android). Choose any color you like from 16 million colors. APP control to turn lights on or off, dim or brighten and even adjust the speed of mode,Easy Installation & Control: Fix light strips by 3M tape or cable-tie(8 ties inside package), Car LED light strip has a working voltage of 12V and powered by car charger, download app to operate.Strips also has memory function, it will memorize and repeat playing your personalized settings after lights turned on,Car Cigarette Lighter: orahon interior car lights comes with car cigarette lighter, so it will compatible with most kinds of cars,2 Wire Design: The car led 1 main wire is divided into 2 branch wires, the length of the auto parts is enough to fit most models, the wires are hidden under the car mat, no need to worry about exposed wires or untidy appearance,Music Mode: The car LED light will automatically adjust the flashing mode according to the rhythm of the mobile phone music.You can sync music whatever you want to play in APP; it also add a romantic, wonderful atmosphere to your party