Let your love glow with this Light Up Decal. This cutting edge technology features LED lights embedded in a unique piece of gear and easily mounts to your window with peel and stick clips that the decal can slide in and out from. This innovative piece of merchandise turns on automatically while you"re driving and shuts off after two minutes once you are parked. Works great on factory tinted window and makes an awesome gift! 4 inch diameter lighted area. Automatically turns on and off via multiple sensor technology. Easy to install with peel and stick mounting material. Batteries and extra set of mounting clips are included. Soft blue indicator light lets you know from behind when decal is lit. Uses three AA Alkaline batteries (included).