Combining charging cable and battery pack, the Jump Cable from Native Union is a compact solution for charging your iPhone on the go. This compact device provides a handy way to keep some extra battery juice and in your pocket while doubling as a USB cable for charging and syncing from a laptop or USB plug. Featuring an 800mAH rechargeable lithium-polymer battery, Jump will provide your iPhone with an extra 30% charge- that's up to 3 hours talk time, or up to 70 hours on standby. When you plug the USB into a computer or USB plug, Jump charges both its own battery and your phone at the same time- to ensure that you'll have a backup charger ready for when you're away from a charging point. Designed to go wherever you do, Jump is lightweight and features a space saving design that allows you to easily stow the cable so you can slip it away and not worry about getting tangled.