Sinoele 3500 mAh External Battery Power Bank for Samsung Galaxy 3, Iphone 5, 4, 3, and Other Cellphones Sinoele 4000mAh Power bank external battery pack Compact, portable & stylish design Easily fits into your bag to provide instant power, Charge your devices anytime and anywhere 500+ recharge cycles over the life of the battery Enjoy 18 hours Movie time for iPhone 4S 4 3Gs 3G and iPod Touch 1G to 5G or add 200% - 250% to most mobile phones' battery life Includes a 1 Year warranty