Cascada 16 Inch Ceiling Mount Square Rainfall LED Shower Head, Stainless Steel (include Shower Arm)About this item Turn on the fun in your shower just by turning on the water; LED lights will automatically light up and set the mood, Changes colors automatically based on the water temperature with no batteries Self powered by a built in dynamo that takes advantage of the water One Year Warranty Product. Product Description 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