1.1900mAh External Battery for iPhone 4/4s 2.Capacity:7.2WH ( 1900 mAh) 3.Standby Time: Up to 230 hours 4.Manufacture Description 1900mAh External Battery for iPhone 4/4s Features: The Thinnest External battery for Iphone 4G External battery for Iphone 4G Petite convenient ,easy to use,High capacity Charge itself by USB power 4led power indicator Protect caseInformations:Product name: External ...