The Vacmaster Professional 20V 4-gallon cordless wet/dry vacuum offers cord-like power without the hassle of a cord. With its rugged toolbox design, you can take this wet/dry vacuum on the go to the jobsite, campground, car, or just inside the home. This cordless wet/dry vacuum is the ultimate portable cleaning solution with enclosed accessory storage, floor to ceiling cleaning reach, and a removable shoulder strap for hands-free transport. It also features a robust accessory assortment, high-capacity battery, charger, and hose storage. It's even equipped with a built-in bottle opener to help you cool off after a tough job. * "Tank Size" refers to the actual tank volume, and does not reflect capacity available during operation. ** Maximum initial battery voltage (measured with workload) is 20 volts. Nominal voltage is 18. *** CFM, Water Lift, and Air Watts tested to ASTM standard at the end of included hose.