Features:
* USB rechargeable lithium-ion battery
* Designed for the iPod Shuffle but can be used with other USB powered devices
* Supplies 40 hours of play time to the iPod Shuffle, and 12 hours of playtime to the iPod Classic, Mini, and Nano
In the box:
* Cell Boost iRecharge for iPod Shuffle
* USB extension cable
* 3 protective sleeves
Here is the manual to the recharger
http://www.cellboost.com/img/manual/Manual_irecharge_shuffle_1.pdf
