Smart led display water shower thermometerLED Display Home Water Shower Thermometer Flow Self-Generating Electricity Water Temperture Meter Monitor Energy Smart Meter for Baby Care. No batteries required - The device harvests its energy from the water flow Quick and easy installation without any tools - fits with handheld showerhead Materials approved for drinking water est innovated technology to upgrade and modernize your bath room self powered battery free thermometer to monitor your shower temperature. As home essential Needed - to serve and surprise your husband, wife or kids.(Especially for families having toddlers or babies) High-precision temperature sensor 360rotatable waterproof led screen for better viewing Elegant and sleek design - premium quality even fit to all five star hotels level ( The Tecboss LED Digital Shower Thermometer is an inspiring and surprising technology to give people a real time monitor of the shower temperature. It is self powered, mainly comprises a hydro power generator, a thermal sensor, and a digital LED display. With this device, you can easily monitor the real time water temperature, and take a more enjoyable shower :) Specification:Material:ABS, PC Size:connect to standard 1 or 2 inch hose or shower head Temperate Range:5-85 Weight:80g Thread type:1 or 2 NPT Package Includes :1 x LED Display Water Temperture Meter Monitor Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.