Inogen Product Guide 1-3 PULSE 1-6 SETTINGS 1-5 SETTINGS Weight 3 pounds 4.5 pounds 18 pounds Size Length: 5.9 inchesWidth: 2.7 inchesHeight: 7.2 inches Length: 7.2 inchesWidth: 3.2 inchesHeight: 8.1 inches Length: 13 inchesWidth: 7 inchesHeight: 16.5 inches NoiseLevel 40 Decibels* Less than 38 Decibels* 40 Decibels* BatteryDurationat Setting 2 Single battery: 2 hrsDouble battery: 4 hours Single battery: 4.5 hrsDouble battery: 8.5 hours N/A BatteryRechargeTime Single battery: 2-4 hrswith AC or DC power Double battery: 4-8 hrs with AC or DC power Single battery: 2.5 hrswith AC or DC power Double battery: 4 hrs with AC or DC power N/A Inogen One G4, Inogen One G5, & Inogen At Home Power Sensing AC Power Supply 100-240V, 50-60Hz(auto sensing to allow worldwide use) Operation Simple control functions and easy-to-read LCD display Resources and References: Inogen One G5 Inogen One G5 User Manual (PDF) Inogen One G4 Inogen G4 User Manual (PDF) Inogen At Home Inogen At Home User Manual (PDF)