8" Round Multi Color LED Rain Shower HeadFeatures: Polished Chrome Finish. Standard size. Replace your old shower head with this exciting new product. The threading is universal, so it will fit any standard shower head. No Batteries. This high tech rain shower head powers the LED lights using a built in hidden dynamo. The lights will automatically turn on when water pressure is turned on. The lights will dim and brighten when you lower and raise the pressure. So you can set the perfect mood,