【Built-in Devices】 The colorful led water faucet has mini built-in generating electricity devices, no need of batteries, as long as the water speed it will give out light, turn off the water, the light goes out immediately. The color changes according to the water temperature 【Temperature Control】 When the water temperature is below 32 degrees, the light color is Blue. When the water temperature is between 33 to 41 degrees, the right shows Green. When the water temperature is between 42 to 45 degrees, it will display the red. When the water temperature is higher than 46 degrees, the light flashing red. 【Environmental & Energy Saving】Water faucet Built-in LED lights, no batteries and external power supply, it will illuminate after water flows down..The color changes according to the water temperature. 【Easy Installation】 Even if you're not plumber or handyman, installation is a breeze for any skill level. Doesn't require plumbing experience or complex tools, you can install and use the water faucet tap in no time. 【Premium Quality】 LED water faucet made of stainless steel material with excellent preservative. Ideal for bathroom or kitchen to make it fantastic,very dreamy and, Manufacturer: Haofy