Greenery Slim External Rechargeable Backup Battery Charger Charging Case Cover for iPhone 4 4s (2000mAh) (Iphone 4/4s 1900mAh PINK)
High quality Ultra Slim External Li polymer battery Lithium-ion Power for iPhone 4 & 4S * Standby Time:Up to 230 Hours;Weight: 65g; * Talk Time:Up tp6.5 Hours on 3G Network / Up to 10 Hours on 2G Network; * Audio Play:Up to 30 Hours;Vidio Play:Up to 8 Hours; * Portable,convenient,easy to use,high capacity