LED Strip Light RGB Sound ControlWhether you're looking for a way to spice up your car's interior or want to add some extra ambiance to your next movie night, the Sound Control Music Rhythm Light is the perfect product for you! This easy to use light bar features customizable colors and light effects, as well as zestful music and scene modes. Plus, with its built in battery, you can take it with you wherever you go! Instructions: MODE SPEED key: Short press to turn white select mode;