Works with iPhone
Integrated 4 LED charge status indicator
SMART battery, Light weight,thin design
Non-slip comfort grip
Micro-USB charge and SYNC cable
More than 2X your battery!

Rechargeable lithium polymer battery
Talk Time:
up to additional 6hrs(3G network)
up to additional 12hrs(2G network)
Internet Use:
up to additional 6hrs(3G)
up to additional 7hrs(Wi-Fi)
Standby Time:up to  380hrs.
Audio Playback: up to 28hrs.
Video Playback: up to 8hrs.
Specifications:
Weight: 190g
Capacity:1900mAh
Cell type:Lithium-ion battery
Dimension:113*66*21mm
Output voltage:5V
Output current:700mA max.
Cycle life: >500times