Pecham Car Voice Controlled LED Interior Lights have 72 light beads, customize the color and adjust the brightness with the smart app's color palette, making it easy to create your own car ambiance, and switch to voice-activated mode and your lights will respond to the beat of the music you're playing in your car. Perfect for Halloween and Christmas decorating your car. Easy to use and great for gifts. It is 12.6 inches and can be easily mounted on any surface, comes with its own backing for quick installation. Our light bar gets its power directly from the 12V adapter and instantly connects to your front USB port. Add some eye-catching color to your car with sound-activated LED interior lights.