Features: The sensitive faucet light will change colors according to the temperature of water. The color& 39;s change remind you the water& 39;s temperature. Water flash red when temperature above 51C Water glows Red when water is Hot (temperatureis 44Deg.C- 50Deg.C). Water glows Green when water is Warm (temperature is 32Deg.C- 43Deg.C). Water glows Blue when water is Cold (temperature below 31Deg.C). No batteries and external power supply, it will illuminate after water flows down. Offer you a delight & wonderful experience. Fits on most taps and lights up a set of LEDs when you turn on the tap. Transforming the stream of water into a beautiful waterfall of light. Ideal for bathroom or kitchen to make it fantastic. Specifications: LED emitting color: Green, Red & Blue Shell Color: Silver Size: approx. 3.5*2cm Package includes: 1 x LED light faucet