We are Specializes in supply medical equipment such as : Oxygen Concentrator 5L Made in USA Detail Input Voltage: 120 VAC +/- 10% Input Frequency: 60 Hz Average Power Consumption: 390 watts Oxygen Concentration (at 5 LPM)*: 93% (+/- 3%) Liter Flow: 0.5 - 5 liters per minute Weight: 52 lbs. (14 kg) Sound Level: 50 dBA typical Dimensions (H x W x D): 26.5 in. (673 mm) H x 18.5 in. (470 mm) W x 14.5 in (368 mm) D SenseO2 (Oxygen Percentage Indicator) Alarm Levels: Low Oxygen: 82% Very Low Oxygen: 70% Operating Temperature: 55 F to 90 F (12 C to 32 C) Storage / Transport Humidity: -30 F to 160 F (-34 C to 71 C) up to 95% relative humidity Operating Humidity: up to 95% relative humidity Outlet Pressure: 5.5 PSI Operating Altitude: 0 to 7500 ft (0 to 2286 m) Warranty: 1 Year Certificate : CE, FDA,510K MADE IN USA MOQ: 150 Pcs.