LED Rainbow Projector Room Night Light W/3 Display Mode Principle should be very simple, the lid of the above project to parabolic reflector plate projection lamp and then reflected to the environment. The rainbow is fleeting, but with it, you can see the rainbow anytime and anywhere. The finished lamp chimney effect hazy dream, colorful, like into the fairy-tale realm, beautiful. Name: Rainbow Projecting Lamp. Color: White Material: ABS Size: 14*10*6cm. Power: 3 X AA(batteries are not included in packaging). Packaging Included: 1 X Lamp.