Specifications : Oxygen concentrations 87 to 96% at all settings Pulse mode bolus size 1=12 ml, 1.5=18 ml, 2=24 ml, 2.5=30 ml, 3=36 ml, 3.5=42 ml, 4=48 ml, 4.5=54 ml, 5=60 ml, 5.5=66 ml, 6=72 ml Continuous flow settings 0.5 LPM, 1 LPM, 1.5 LPM, 2 LPM Sound level 43 dB at pulse setting 2 Size 11.5 in x 10 in x 6 in (29.2 cm x 25.4 cm x 15.2 cm) Weight 10 lbs (4.5 kg) with battery Operating temperature 41oto 104oF (5o to 40oC) Storage temperature -4oto 140oF (-20o to 60oC) unit only Altitude Up to 10,000 ft. (3048 m) Filtration Internal bacteria filter DC power Input 12 to 19 VDC 8.0 A max AC power Input 100 to 240 VAC, 50/60 Hz, 2.0 A Output 19 VDC 7.9 A max Power consumption 150W while charging, 120W while not charging Alarm types Low oxygen purity, No breath, High breath rate, No flow, Low battery, Depleted battery, Wrong battery, System technical fault Lithium Ion battery 1.5 lbs (0.7 kg), charge time is approximately 2 to 3 hours per battery from fully discharged Ordering information : Basic system : Includes SimplyGo portable oxygen concentrator, carrying case, mobile cart, one rechargeable Lithium Ion battery, DC and AC power cords, accessory bag, and user manual 1068987 Combination systems : SimplyGo/EverFlo non-OPI 1097735SimplyGo/EverFlo OPI 1097736SimplyGo/EverFlo Q non-OPI 1098068SimplyGo/EverFlo Q OPI 1097737 Accessories : SimplyGo carrying case 1082663Lithium Ion battery 1082662Battery charger 900-103DC power supply 1083692AC power supply and cord 1082661Airline power cord 1083693Accessory bag 1083696Mobile cart 1074885User manual 1083700Humidifier pouch 1083699Humidifier connecting tube 1039642 Warranty options : SimplyGo two-year total warranty 1097623SimplyGo three-year total warranty 1097577SimplyGo five-year total warranty 1097778