Rozin Bathroom Rainfall 12-inch Shower Head LED Light Overhead Spray Oil Rubbed Bronze Bathroom Replacement Showerhead,Brass material Size:12-inch12-inch(30cm),Square Shape 1/2" standard connection,with rubber gasket and ball joint LED light works by water flow,no battery is need; Color changes according to water temperature Rozin provides any replacement in future use,so contact unhesitatingly once you have any problem