Inogen One G3 Oxygen Concentrator

Weight: 4.8 lbs
Dimensions: 8.75 × 3.0 × 8.25 in (Height includes single battery)
Oxygen Flow: 5 Flow Settings from 1-5
Battery: Duration (single battery): up to 4.7 hours; Duration (double battery): up to 10 hours
Noise Level: 39 dBA (on setting 2)