Inogen One Portable Oxygen Concentrator combines stationary oxygen equipment and portable cylinders into a single, powerful oxygen concentrator. Now oxygen users are able to live more active and independent lifestyle without ever worrying of running out of their oxygen supply. The Inogen One has been approved by the FAA for use on most major airlines ensuring you can safely use this machine on the plane. The concentrator is extremely lightweight (9.7 pounds with battery) making it very easy to transport and carry. Comes with an AC and DC adapter, 1 cart, 1 carry bag, 1 rechargeable lithium battery, nasal cannula and a limited 3 Year Manufacture Warranty.