Have you ever wanted the inside of your vehicle to resemble an out-of-control rave with lights? You can modify and customize the colors and flash modes for the strips to match your particular space or mood. Download the Monster Smart App to your phone and you can change them whenever you want something a little different. Switch over to the Sound-Reactive mode and your lights will react the beats of the music you’re playing in your car. At 10.5 inches, it easily fits to any surface and the self-adhesive backing allows for a quick installation. Our strips receive direct power from a 12V Adapter that links to your front DC Port instantly. Give your car some striking colors with the Bluetooth Sound-Reactive LED Car Interior Lights.