3 Color Changes The LED shower heads can change to 3 different colors when the water temperature changes, the water temperature (0~29: blue; 30~39: green; 40: red), the LED shower head changes differently depending on the temperature Colors and displays the corresponding temperature. Doesnt Need BatteriesIts an eco-friendly and energy-saving product, the LED shower head is powered by water temperature sensor, no batteries or electricity required, so it is very safe to use, you enjoy wonderful baths and beautiful colors. Three Water Outlet MethodsThe three different spray types of the LED shower head: rain spray, massage spray, rain+massage mixed spray, you can switch these three modes just by pressing the button , one-handed operation. High Pressure Water SavingSealed nozzle makes outlet holes smaller and denser, LED shower head increases water flow speed and pressure, allowing water flow constant to save you 30% water. Easy InstallationInstallation without tools, just unscrew the old shower head, then screw the LED shower head as in the screw thread. fits most standard shower heads (hose not included).