Model Number: CHT-1110 Key Specifications/Special Features: No batteries, no wires needed, built-in mini hydroelectric generator, when water flows the LED lights up instantly and automaticallyLED light shower headIt makes use of LED light technology reacting to the waters temperatureWhen water flows the LED lights up instantlyLights up: green when water temperature is below 32°CBlue: when water temperature is between 33-41°CPurple: when water temperature is between 42-45°C

Red: when water temperature is above 45°C

LED showerhead changes color by detecting water temperature Light goes off when water source is turned off