With the H20 LED lamp can create wavy projections on walls and ceilings. A rotating color filter lets the waves shine in different colors. If you prefer only one color, you can stop the filter at this point. I knew the lamp even from my neighbors, and I have now installed in my dental practice to illuminate the ceiling with it. Thus I have the opportunity, the patients from the actual events distract something and relax. Especially in children is the very well !!!