Perfecto2 V Oxygen Concentrator ***LOT OF 1*** ***POWERED ON AT TIME OF AUCTION*** **GREEN O2 READY AT TIME OF AUCTION** The Perfecto2 V Oxygen Concentrator is a 5-liter concentrator which is available at an economical price. This oxygen concentrator weighs just 43 pounds, making it easy to move around your home. Its contemporary, sleek and stylish design helps it to fit in with your décor, and the handle at the top makes for easy portability