Inogen G5 Portable concentrator

The Inogen One G5 delivers the independence of a portable oxygen concentrator in one of the most powerful, lightest and quietest units available to the oxygen user today. With flow settings 1-6, the Inogen G5 oxygen concentrator provides 24/7 customizable oxygen delivery in a strong, yet compact package. FAA approved. Only 4.7 lbs. Includes single battery