This external battery kit is customized for Apple iPhone 3g & 3gs, which capable to support your iphone while you are traveling and giving your game player extensionally without interruption. Special non-slip comfort grip design and this package comes with micro usb cable for charging and synchronize.Works with Motorola V9 charger! 

Features: 
Chemistry: Lithium Ion battery 
Talk Time: Up to 6 hours(3G Network coverage); Up to 12 hours(2G Network coverage). 
Internet condition: Up to 5 hours(3G Network coverage); Up to 6 hours(Wi-Fi). 
Standyby Time: Up to 380 hours(no network-carrier count) 
Audio Playback: Up to 28 hours(no network-carrier count) 
Video Playback: Up to 8 hours(no network-carrier count) 

Specification: 
Weight: 66.5g 
Capacity: 1800mAh 
Dimension: 113 x 66 x 21 mm 
Output voltage: 5V 
Output current: 700mAh max 
Cycle life: 500 times 

Package weight: 133g
Package dimension: 170 x 111 x 26mm