Bathroom led shower head

Product Specifications:

1.Material: ABS plastic
2.Working power: No battery needed,water pressure power
3.LED color:Green,Blue and Red
4.Surface: Chrome electrofaced and polished
5.Shower type: hand shower head
6.Regular Working hydraulic pressure:0.1~0.5MPA

1?As the built-in device generating electricity without the battery and any other power connets to water, LED will emit the light.
2?The light can change one color every 3 to 5 seconds so that the rainbow colors are showing gradually.