Features:

External battery case, portable and convenient to use
Specially made for Samsung Galaxy SII i9100
With 2200mAh large capacity, rechargeable for cycle use
A power supply as well as shell protection to the cellphone at the same time
With power on/off button and LED indicator for easy use

Specifications:

Product: external battery case for Samsung Galaxy SII i9100
Capacity: 2200mAh
Output voltage: 5V
Output current: 750mAh
Input voltage: 5V
Input current: 400~500mAh
Cell type: rechargeable Lithium-polymer battery
Cycle life: 500 times
Operating temperature: -10~ +45â„?br>DC charging time: 4 hours
Weight: 65g
Color: White
Dimensions: 135 x 70 x 16.9mm
Package size: 180 x 110 x 45mm
Package contains:
1 x 2200mAh Case
1 x USB Cable
1 x English User Manual