Product Dimensions: 25.2 x 12 x 13.2 cm ; 327 g Multicolored LED lights make a rainbow with intense， realistic-looking colour and that curve in a natural arc across your walls and ceiling， just like a real rainbow. This projector also has an automatic shut-off function to preserve the battery after you have fallen asleep. When with a loved one this projector can create a romantic calming atmosphere . For children， this projector can be used to brighten up their bedroom， turning it into a magical wonderland that makes them drift off to sleep quickly. You can even change the rainbow shape by adjusting the reflector plate located on the projector.