HIGH-TECH GADGET - Features built-in electricity-generating devices; no batteries required. The LED activates with water pressure. Lights turn on within 2-3 seconds and turn off immediately when the tap is closed. SMART SENSOR - Equipped with a sensitive temperature sensor. The faucet light turns blue when water is cold (below 32°C), green when water is warm (33°C–41°C), and red when water is hot (42°C–45°C). WATER SAVING FUNCTION - Designed with water conservation functionality and includes a water-saving filter connected at the top. EASY TO INSTALL - Connector fits a variety of faucet interfaces for quick and simple installation. Made from ABS material with excellent corrosion resistance. Suitable for bathroom or kitchen use. PACKAGE INCLUDES - 1 x Temperature Sensitive Gradient LED Water Faucet.