Alfi LED5007 12" Round Multicolor LED Rain Shower Head, Chrome No Batteries! This high tech rain shower head powers the LED lights using a built in hidden dynamo. Auto Temperature Detected Light Color Change! The shower head will automatically change colors according to the temperature of the water. Never be scalded again by entering a shower that is just too hot! Standard size. Replace your old shower head with this exciting new product. The threading is universal so it will fit any standard shower head. Modern Stylish Design. Completely polished chrome made to match or stand out from your other bathroom fixtures.