1:Portable Charger Battery for iPhone 4S/4/3G/3GS ,Mobile phone 2: capacity :2800mAh 3:have CE,FCC,ROHS approved Portable Charger Battery for iPhone 4S/4/3G/3GS ,Mobile phone(Such as Blackberry,Nokia,Samsung Motorola ,Lg,Song Ericsson ,mp3 and etc ) Portable Charger Battery adds plenty hours of play time to your iPod device(s),as well as prolongs the life of other Portable devices wherever you go ...