Feature: 100% brand new and high quality . This Item Does Not include Adapter for Faucets When water flows down, the LED will light up instantly and automatically No battery needed, it is powered by the pressure of water. Very environmental The LED lights change color according to water temperature, make water colorful and beautiful to bring you good feeling LED turns blue when under 31°C, turns pink when between 32°C - 38°C, turns red when between 39°C - 45°C and flashes when higher than 45°C 0~31°C Green 32~38°C Blue 39~45°C Red Higher than 45°C Red (Flashing)Specification: Material: ABS Finishing: Chrome Threads Size: Male: M24 x 1 Dimension: 3.4x5.2 cmPackage Content: 1xLED Light Water Kitchen Sink Faucet Sprayer Nozzle(without retail package) 2xAdapter