3 COLORS COLORFUL - 3 colors (blue, green, red) of the LED water faucet are automatically displayed when the water flows, without batteries or external power supply. It displays blue when the water temperature is lower than 32 degrees, green when the temperature is between 33 and 41 degrees, red when the temperature is between 42 and 45 degrees, and when the temperature is higher than 46. The display flashes red when the temperature is LED LIGHT - This LED water faucet changes according to the real-time temperature every 1-3 seconds to provide a colorful and changeable lighting effect. This product has a built-in small electric power generation device, which does not need to be powered by a battery. It emits light as long as there is water jet. When the water source is turned off, the lamp will turn off immediately. The light color can change in WONDERFUL EXPERIENCE - Easy to install and turns on when you turn on the faucet, giving you a wonderful pleasure and experience. WIDELY USED - Transforms the water flow into a beautiful waterfall of light. for use in the bathroom or kitchen. CONVENIENT TO USE - The changing light color reminds you of the water temperature and is very practical and convenient to use.