1.No batteries,no wires needed. 2Colour changes according to the temperature of the water running through it! 3.Showerhead changes the colour of the water coming out using built-in LED's. 4.Low flow,water conservation with a unique fun&soothing experience. 5.The showerhead handle connects directly into your shower pipe. 6.Shower head lights up jets of water using the multi-coloured LED and visually indicates the water temperature by the colour.The water flow will turn GREEN if the water temperature is under <=32âÂÂ,turn BLUE if the water temperature is between 33âÂÂ~41âÂÂ,turn RED if the water temperature is between 42âÂÂ~45âÂÂ,RED FLASH if the temperature is over 46âÂÂ. 7.However,only the built-in LED's enthusiasts will be atteacted by this innovative Shower Gizmo. Surface disposal of metal color.