MiLi Power Spring 4

Made specially for iPhone 4, the MiLi Power Spring 4 embraces the iPhone 4 in its protective shell, providing users with both the convenience of extended battery life, as well as the protectiveness of a well fitted battery case.

Product specs:

Battery type: Lithium polymer
Capacity: 2000 mAh
Input:5V/0.5A
Output: 5V/0.5A
Self-charging time: 4 hrs
Standby time: 450 hrs
Talk time: up to 7.5 hrs on 3G, up to 16.7 on 2G
Internet use: up to 7.5 hrs on 3G, up to 13.3 hrs on wi-fi
Audio play: up to 45 hrs
Video play: up to 1 hrs
Product measurements: 124x65x18mm

Available in black and white

Product srp: $89.00