Light up your life with NIGHT CATS Light Up Window Decoration! Blue. Battery powered by 3 AAA batteries or 12v cigarette power supply. Can be set to be on continuously or activated by sound. The light turns on and off with blinking motion. The impact of the dark is great! It is interesting not only for cars, but also for interior decoration of shops and rooms. Lights up blue width: 8" hight: 3"