Batteriekasten für iphone 4

1.Power on/off button included 2.4-LED indicators show you battery status.Each light means 25% power inside. Press the button one time--- showing the battery status;press twice(within 3 seconds)---charging;press the button again in 3 seconds---stop charging. 3.Built-in 2400mAh rechargeable lithium polymer battery 4.Input:5V,1A 5.Output: 5V 1A 6. blackcolor outsideand oranged rubber oil inside, alsowe can provide any color inside as your idea.7.With a holder at the back, you can comfortably watch movie, guided tour and photo.8. Thisbattery case is compatible for iphone 4