This shower head visually indicates the temperature of the water, which prevents relying on touch and enhances bathroom safety. This product has been designed to change colors at appropriate water temperatures. A blue color appears for cool temperature, green for warm temperature, red for hot temperature, and flashing red for very hot. Hydro-powered LED Indicator technology illuminates the water as it flows through. No electricity or batteries are required. The shower head installs easily and includes a removable five-foot flexible hose and shower head bracket. Fits most standard shower connectors (3/4") and includes instructions in English and Spanish.