Stainless Steel (not 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, water and light. Auto Temperature Detected Light Color Change. The shower head will automatically change colors according to the temperature of the water. So you always know how the water will feel on your skin just by looking at it: -When water temperature is ?90F, Green color will show automatically -When water temperature is between 91F~105F, Blue color will show automatically -When water temperature is between 106F~113F, Red color will show automatically -When water temperature is above 115F, Red color will flash immediately -Water Flow: 1.8 GPM per each function. -Water Pressure: 60 Psi. -Thread: 3/4" NPT for Inlet for Hot / Cold, and 1/2" NPT Outlet for each function. Additional Details ------------------------------ Product description: Stainless Steel (not 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, water and light. Auto Temperature Detected Light Color Change. The shower head will automatically change colors according to the temperature of the water. So you always know how the water will feel on your skin just by looking at it: -When water temperature is ?90F, Green color will show automatically -When water temperature is between 91F~105F, Blue color will show automatically -When water temperature is between 106F~113F, Red color will show automatically -When water temperature is above 115F, Red color will flash immediately -Water Flow: 1.8 GPM per each function. -Water Pressure: 60 Psi. -Thread: 3/4" NPT for Inlet for Hot / Cold, and 1/2" NPT Outlet for each function.