An amazing rainbow projector?you can cast a beautifully brilliant rainbow on the walls and ceiling of your room! It uses multi-colored LEDs. It turns on with a wave of your hand and has auto shut-off. This amazing rainbow projector is perfect for a desk or nightstand. There is an optional AC adapter and a bonus disc for projecting daytime rainbows. . It?s a sure way to make any room a happier place. It requires 3AA batteries (not included).