Backup Battery Case Charger for Iphone 4G

backup battery case Talk time: Up to additional 5 hours( 3G Network) Up to additional 10 hours( 2G Network) Internet use: Up to additional 4.5 hours( 3G) Up to additional 7 hours( Wi-Fi) Standby time: up to additional 240 hours Audio Playback up: up to additional 28 hours Video playback up: up to 7 hours Parameters: Input: DC5.0V, 500mA Output: DC5V, 500mA Cell: Li-polymer 1700mAh Size:120x62x 17.6 mm Weight:65g Charge time: 5 hours Applications: iphone 4G With sync function Talk time:Up to additional 5 hours( 3G Network)Up to additional 10 hours( 2G Network)Internet use:Up to additional 4.5 hours( 3G)Up to additional 7 hours( Wi-Fi)Standby time: up to additional 240 hoursAudio Playback up: up to additional 28 hoursVideo playback up: up to 7 hoursParameters: Input: DC5.0V, 500mAOutput: DC5V, 500mACell: Li-polymer 1700mAhSize:120x62x 17.6 mmWeight:65gCharge time: 5 hoursApplications: For iphone 4GWith sync function Packing Detials: Carton Size:39.8*23*25.6cm,GW:6KG Carton:40pcs