This 4-in-1 car jumpstart compressor is great for jump-starting cars, vans, light trucks, RV's, boats and snowmobiles miles away from power supplies. Simply use the AC or DC charger to recharge the unit, throw it in the back of the truck or trunk and when you wake up to a dead battery or a friend needs a jump, just pull it out, hook it up and jump start that vehicle without the use of tangled up jumper cables. It also comes with a built-in compressor so you'll never be stuck with a flat tire again. The air hose hides neatly inside the back of the unit and the jumper cables wrap snugly around the sides.