No traveler should be without this handy device. It’s a 250-psi air compressor, 110-volt power inverter and jump-starter all in one. Use it to inflate tires, jump-start a vehicle or power accessories with its integrated 12-volt DC power sockets. It’s built tough with a rugged polypropylene case. Two 29" 4-gauge cables are equipped with shortened-clamps audio alarm and a reverse-polarity audio alarm. Fully charged, the unit has 400 amps of power available to jump-start a vehicle. Outfitted with a two-stage charger, you can leave the unit plugged into a wall outlet indefinitely. A charge indicator light lets you know when the unit is fully charged. Compact for easy transport, it measures 20-1⁄2" x 13-1⁄2" x 14-1⁄2".