1,led shower head over head 2,LED QTY:20-100pcs LED. 3,not need battery self powered. 4,best over head shower CE led shower head, wall showerGenerated by itselfwaterpower,needless battery,the color can be changed depend on the water temperature,below 29 centigrade-green color,between 30-39 centigrade-blue color,between 40-52 centigrade-red colorLED Colour: Green/Blue/Red (Three colours)size: 8", ...