IS-400-4CELL (with Single Battery), IS-400-8CELL (with Double Battery)
Inogen One G4 is a portable oxygen concentrator that offers oxygen therapy for patients that require supplemental oxygen. The G4 is the latest addition to the lightweight, portable oxygen concentrator market. Weighing less than 3 pounds, the G4 offers pulse flow oxygen in a range of 1 to 3 settings.
Philips Respironics -
1020015 (EverFlo Q Concentrator), 1020014 (EverFlo Q Concentrator with OPI), 1020000 (EverFlo Concentrator), 1020001 (EverFlo Concentrator with OPI)
The stylish EverFlo Oxygen Concentrator is a great option for home oxygen users who are tired of big noisy machines or inconvenient oxygen tanks. EverFlo's small form factor, advanced motor, low power usage, and lightweight, durable construction make it easy, convenient, and very popular! The non-medical design and blue color make it unobtrusive and at home in almost any environment.