Inogen One G4 Specifications

Dimensions: 5.9" x 2.6" x 7.2"
Weight: 2.8 lbs
FAA Approved: Yes
Flow Settings: Pulse Dose Delivery: Three flow settings - 1, 2, 3
Noise Level: 40 decibels at a 3.0 pulse dose setting 
Power Consumption: AC Power Supply 100-240V, 50-60Hz (auto sensing to allow worldwide use)
DC Power Cable: for mobile use in car
Battery Duration:

Depends on setting

Setting of 1
4 Cell Battery: 2 hours 40 minutes, average
8 Cell Battery: 5 hours, average

Setting of 2
4 Cell Battery: 2 hours 15 minutes, average
8 Cell Battery: 4 hours 30 minutes, average

Setting of 3
4 Cell Battery: 1 hours 20 minutes, average
8 Cell Battery: 2 hours 30 minutes, average