This is the new Jackery Air - an external battery pacl for your smartphone. It measures slightly thicker than an iPhone 5, but has a contoured housing and similary sized dimensions which means it can slip in your pocket easily as your phone. It's also a tank, with 5600mAh.

Charging it from dead takes about six hours, but it'll juice up your phone to 200 percent and can be used with larger devices like iPads and other tablets. It's on sale now for $80 for a limited time. [Jackery via Ubergizmo]