Rainbow Lamp Wall Ceiling Projector Night Light Arch Shape Romantic LED Room/Hallway/Lobby/Decoration Sleep Light Auto Off Function The light will turn off automatically after 10 minutes,touch the button, it will light up again Different rainbow waves can be regulated switch on projector Battery supply power, use it any time and anywhere, traditional power, just for optional AC adapter See a magical rainbow on the walls or celling via 5 LED projector wonderful device projecting waves of rainbow Intelligent electricity saving design patterns