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. If you would like to take a comfortable bath every day, you are in the right place. This 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 it for you. The sprinkler design makes you comfortable when taking a bath. It can bring you a good feeling from head to toe just like massage. Itis really a good assistant to ease fatigue and tiredness. What a good shower product for you! Come on and never miss it.