This product the LED and digital display power by water flow.There is a hydroelectric generator inside the product. When there is enough water flow, it will generate a safe power supply for LED and Digital display. Ifyou would like to take a comfortable bath every day, you are in the right place. This 44.88 inch Shower Panel Tower System Stainless Steel 5 in1 Multi-Function Shower Panel with Spout Rainfall Waterfall Massage Jets Tub Spout Hand Shower for Home Hotel Resort Split Type can do itfor you. The shower system is lightweight, durable, and corrosion-resistant. Featured With Durable Ceramic Valves Ensuring There Are No Water Leaks. Available To Work More Than 600,000 Times At a Water Temperature Of 90 Degrees. Its strong construction, paired with the fact that it is pre-plumbed .The sprinkler design makes you comfortable when taking a bath.It can bring you a good feeling from head to toe just like massage. It is really a good assistant to ease fatigue and tiredness. What a good shower product for you! Come on and never miss it.