Mophie Backup battery case for iPhone 3G/3GS

Mophie Backup battery case foriPhone 3GS: Standby Time: Up to 350 hoursTalk Time: Up to 6 hours on 3G | Up to 12 hours on 2GInternet Use: Up to 6 hours on 3G | Up to 7 hours on Wi-FiAudio Playback: Up to 28 hoursVideo Playback: Up to 8 hoursMophie Backup battery case foriPhone 3G: Standby Time: Up to 350 hoursTalk Time: Up to 6 hours on 3G | Up to 12 hours on 2GInternet Use: Up to 6 hours on 3G | Up to 7 hours on Wi-FiAudio Playback: Up to 28 hoursVideo Playback: Up to 8 hoursOther product specifications are as follows:Product Dimensions: 2.50 in x 4.75 in x 0.85 in; 3.0 ozBattery Capacity: 1800 mAhEstimated Shipping Weight: 1 lbsItem model number: JP-IP3G-BLKShipping: This product ships world wideProduct Category: Cell Phone External BatteryProduct Compatibility: Apple iPhone 3G and Apple iPhone 3GS (not included)Package Content Included: juice pack 3G? USB-mini cable, User ManualPatent: Pat. D616360, Pat. D616361