Feature The little device will light up when you turn on the tap.No battery needed， no wire needed. It is powered by the pressure of water.7 color are mixed displayed automatically when water flow.Transforming the stream of water into a beautiful waterfall of light.Offer you a delight &wonderful experience;Very environmentalEasy to use.Ideal for bathroom or kitchen to make it fantastic.Get the CE &RoHS certificates.Note: The concentration of the color depends on the pressure and velocity of flow(The greater the pressure， the more concentrated water color).If you want to see the effect on our images， please watch in the dark environment!Please check before buying interface and suitability in diameterSpecificationModel: LD8002-B13(T)Length: 78mm， Outer diameter:30mmInternal thread diameter: 22mm*1LED: 1PCSLED Color: 7 color are mixed displayed automaticallySurface Finishing: Water-platedMaterial: CopperProvide 2 x Adapters(M24*1mm External thread + M20*1mm 1/2 External thread)， fit most of faucet tapsPackage includes: 1 x LED Faucet Tap2 x Adapters(M24*1mm External thread + M20*1mm 1/2 External thread)