My father recently passed and I have his Inogen G3 Portable Oxygen Concentrator. Comes with carrying case, AC Power supply & cable, manual, and latest service record (5/2022) for the column changes.
From the company:
The Inogen One G3 delivers the independence of a portable oxygen concentrator in one of the smallest, lightest and quietest packages available to the oxygen user today.
With the Inogen G3 oxygen concentrator, you can jump in the car to run errands or take a weekend trip to see family anytime you want. And, since the Inogen One G3 meets FAA requirements, you can even take it on a plane to go on vacation! The Inogen G3 oxygen concentrator makes traveling with your supplemental oxygen supplies as easy as possible to help improve your quality of life on oxygen therapy.
The Inogen One G3 is your one portable solution for oxygen at home, away and for travel, 24/7. It’s oxygen therapy on your terms. Enjoy improved freedom, mobility and independence with the Inogen G3 oxygen concentrator. Oxygen. Anytime. Anywhere.®