With the Xtreme multicolor led starlights 4-pack, you can transform the way you light your car’s interior. The four strobe devices flash colorful led lights and also include a sound-reactive mode that flashes those same patterns in conjunction with the beat of your favorite songs. Ther self-adhesive backing allows for easy installation in your car without issue. Your four lights are always powered via your vehicle’s usb port/charger. Add a little more color to your next evening drive with the multi-color led starlights 4-pack.