16” Rainfall LED Shower Head Set with Shower Arm and Diverter ValveFeatures: Turn on the fun in your shower just by turning on the water, the LED lights will automatically light up and set the mood. They will even change colors automatically based on the water temperature. All this with no batteries, everything is self powered by a built in dynamo that takes advantage of the water pressure to create the energy to light the bulbs. Auto Temperature Detected Light Color Change! The shower head will automatically change