Mighty Jump Pocket Car Jump Starter and Power Bank - Silver Charge a drained or weakened vehicle battery without leaving your vehicle - Transfers power to your battery via the vehicle's internal wiring Charge portable electronic devices - Boost the charge of portable electronics like smartphones so you can navigate out of danger or call for help Recharges easily - just connect Mighty Jump Pocket to a charging source with the included USB cable Compact, portable design - Small enough to fit in your pocket, purse or glove box Works with most devices that recharge via a USB connection