Recreate one of nature's most beautiful optical illusions on an inside wall or ceiling with this clever LED projector light. Perfect as a bedroom light or night light, you can adjust the beam of the Rainbow Maker to fit the space. There are two modes to choose from, a full spectrum rainbow, or a gradual scrolling through the colours from one to full. You can use it with batteries or plug it into the mains (adaptor not supplied). Requires 4 x AAA batteries (not included). Automatically switches off after 10 minutes when used with batteries.