The Rainfall LED Square Shower Head by LightInTheBox is a unique product that features three colors for three water temperatures. The LED stays on during all water temperatures. Colors change during the temp transition; it turns purple when it’s warm, blue for cold and red for hot. when it turns into a flashing red is way too hot. The shower head design is large and square to resemble rain. The changing colors plus the rain action gives a soothing and relaxing feel. Another cool feature the LED light is activated when the faucet senses water flow and does not need batteries.