|With 4 Cell Battery|
|With 8 Cell Battery|
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The smallest of the Inogen series, this concentrator will have you in awe of its giant battery life. The Inogen One G4 is one of the smallest portable oxygen concentrators on the market, only weighing 2.8 pounds. The FAA approved G4 is perfect for getting out of the house for the day, or even going on vacation. This unique machine will meet all your oxygen needs for 24/7 use. The G4 has Intelligent Delivery Technology, so it delivers oxygen within 400 milliseconds of you taking a breath. Only producing 40 decibels of noise, the G4 is the sound of a light rain so you don’t have to worry about disturbing anyone while using your Inogen One G4.