The MiLi Power Spring 4 is an extremely thin battery case designed to double the life of the iPhone 4 and 4S. With it's sleek form fitting design, it also protects the iPhone from scratches.

Lamp Specifications
Spec	Data
Battery Type	Lithium polymer
Capacity	1600mAh
Input	5V - 0.5A
Output	5V - 0.5A
Standby Time	Up to 360 hrs
Talk Time	Up to 6hrs on 3G
Internet Use	Up to 6 hrs on 3G, Up to 10.6 hrs on Wi-Fi
Audio Play	Up to 36 hrs
Video Play	Up to 10.6 hrs
Self-Charging Time	3.6 hrs
Warranty	1 Year

Also Know As:
HIC23, HI-C23, HIC2B/Silver, HIC23-B/Silver, HI-C23B/Silver, HI-C23-Black, HIC23-Black, HI-C23Black, HIC23Black

Works With The Following Models:
iPhone 4, 4S