Remote controll LED shower head 1, No battery needed, the built-in device can generate electricity without any other power connecting to the water.When the water flows down, the led light will emit instantly and automatically 2, The water pressureshould beabout 0.1 0.6Mpa. 3, It can be adjusted to three modes with remote controller: Single lighting color mode, rainbow lighting color mode and Temperature detectable lighting color mode, the first two modes are not subjected to the water temperature. 4,When it is adjusted to the single lighting color, three colors are selectable: green, blue and red. 5,When it is adjusted to the rainbow lighting color mode, the led light will change continously and gradually. 6, When it is adjustedto the temperature detectable mode,the color will change according to the water temperature: GREEN :<= 32deg C (90 deg F ) BLUE: 33-41 deg C (91 - 105 deg F) RED: 42-45 deg C (108 - 111 deg F) FLASHING RED: >46 deg C (115 deg F) 7, It is bright enoughso that there is no needwithany other lighting fixtures, and brings someenjoyment to your bath.