The mophie Juice Pack for iPod Touch 2nd Gen is designed to more than double the time you can Watch, Rock, Surf and Send with your 2nd Gen iPod Touch Sync with iTunes without disconnecting your Juice Pack with the included USB cable! The Juice Pack for iPod touch 2nd Gen is a rechargeable lithium polymer battery in the form of a non-slip, soft grip case. It extends the time that you can use your iPod Touch in these ways (additional hours): Audio Playback ? Up to 24 hours Video Playback ? Up to 7 hours All juiced up and ready to go... straight out of the box.