Water Power - No recharging required. No batteries and no plugs. This smart light hangs from your faucet and generates its own energy from the water flowing through it. This is your own small hydro generator that produces colorful waterfalls every time you use it. SAFE AND DURABLE - This light is made of ABS (like LEGO) and other high-quality materials that won't rust and corrode. Electrical components are neatly and safely separated from those in contact with water, and the LEDs are rated for 50,000 hours of life. Fits standard threads and is easy to install - if your faucet has threads standard round (internal or external) this will work for you. We offer male adapters. To install, simply take it out of the box, remove the existing cover and screw on. Note: This product is only suitable for round spouts. If your faucet is female, the diameter of the threads should be 24. When the water comes out, the LED lights up and changes automatically immediately. Transform the flow of water from the faucet into a beautiful waterfall of light. Note: When the LED faucet is turned on, a certain water pressure is required. If the water pressure is too low, it won't turn on. Since the faucet is made of ABS, be sure to wrap Teflon tape on the threads when installing the faucet. Be careful not to use too much force during installation (too much force will easily damage the ABS material).