MINI PORTABLE UBS RECHARGE BATTKIT 1250MAH1250mAhup to an additional 9 hours talk time, 20 hours audio or 6 hours videoRechargeable, external battery pack provides back-up power for most USB powered devicesPower and charge an iPhone®, iPod®, PDA, MP3 player, etc.Provides extra hours of music/video playback and talk time LED battery gauge notifies how much power is leftIdeal for emergencies or devices with high-power drainIncludes USB cable