World’s Most Advanced LED Shower Head! Powered by running water, no batteries; 5-setting Angle-adjustable Shower Head. 3-color-changing Water Temperature Sensor. 5 Settings include Power Rain, Pulsating Massage, Hydro-Mist, Economy Rain & Water-Saving Pause. Extra-large 5.25″ Chrome Face with Reflective Perimeter Rim. High-power 3-zone Dial with Rub-clean Jets & Click-action Lever. Designer Beveled Rim Accent. Color of LED lights changes automatically according to water temperature: BLUE – Cool under 95F (35C), GREEN – Warm 95-108F (35-42C), RED – Hot 109-122F (43-50C), FLASHING RED – Warning Hot over 122F (50C), LED lights have long life of 100,000 hours (over 10 years of heavy daily use), Connects without Tools.