The Inogen One G5 is one of the most potent, lightest, and quietest oxygen concentrators on the market today, providing the independence of a portable device. The Inogen One G5 provides 24/7 oxygen supply in a robust yet small container with flow settings 1-6. You may take the Inogen One on errand runs, weekend road trips to see relatives, or even on vacation with you! The Inogen One G5 complies with FAA regulations.