The product built-in device for mini generating electricity， illuminated by water without battery， the light will go out when the water was turned off.This item will charge its color by time The light can change one color every 1 to 2 seconds so that the rainbow colors are showing gradually.Two universal adaptors (included) fits most water faucets.The products have excellent function in the are of water saving. In the connection of the top， setting a water saving and filter systems.Type: LED Water FaucetMaterial: ABSLED Qty: 1 PcLED Color: 7 ColorsFaucet Type: Bathroom， Kitchen， etc.Faucet Length: 55mm/2.17" (Approx.)External Diameter: 28mm/1.10" (Approx.)Screw Thread Diameter: 22mm/0.87" (Approx.)Connecter Size: 22mm/0.87" (Approx.)Adapters Size: 20mm/0.79"(Approx.)， 24mm/0.94"(Approx.)Features: Rainbow Light， Automatically ChangeNotes:1. Due to the difference between different monitors， the pictures may not reflect the actual color of the item.2. Compare the detail sizes with yours， please allow slight difference due to manual measurement.Package Includes:1 x LED Light Water Faucet2 x White AdaptersWe will provide you high quality， competitive price， timely delivery products and good service.