1、No Need for Batteries: This faucet nozzle has mini built in generating electricity devices, no need of batteries, as long as the water flow it will give out light, turn off the water, the light goes out immediately.2、Color Changes: When the water temperature is below 31℃, the light color is blue. When the water temperature is between 32 to 43℃, the color is green. When the water temperature is between 44 to 50 ℃, it will display the red. When the water temperature is higher than 51 ℃ , the red light is flashing.3、Eco Friendly and Energy Saving: As the LED faucet is hydropower, it will not produce environmental pollution, is environmentally friendly and saves energy.4、Strong Water Flow: The outlet has strong water flow and large flow area. The powerful water flow makes it very convenient for you to wash your hands.5、Rotating Interface: The LED water tap adopts a convenient installation port, which is easy to install. It can be installed successfully with a slight twist. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store