HIGH-TECH GADGET - Devised with built-in generating electricity devices, no batteries required. The LED activated by a certain water pressure. It takes 2-3s to alter, and the light turns off immediately once the tap is off. SMART SENSOR - With a sensitive temperature sensor, faucet lights with blue when water is cold (below 32C). It glows green when water is warm (33C-41C) and glows red when water is hot (42C-45C). WATER SAVING FUNCYION - The product has excellent water conservation function, and connected at the top with the water-saving filter. EASY TO INSTALL - The connector can make the faucet adapt to a variety of faucet interfaces, hassle-free to install. Made of ABS material with excellent corrosion resistance. Ideal for bathroom or kitchen. PACKAGE INCLUDE - 1 X emperature Sensitive Gradient LED Water Faucet.