Portable Oxygen Concentrator Beikohn Model No. BK-H29, Grey, Dimension W14.9"xD8.25"xH13.78", Net Weight:13.7Lbs, Max. Oxygen Purity 93 ± 3%, Flow Rate 1-9LPM, Control Touch Screen, Voltage 220V/50Hz, Power 130VA, Molecular Sieve CECA/Germany, Noise Level Less than 40dB, Output Pressure 39 ± 5Kpa, Atmosric Pressure 86-106Kpa, Work Temperature 5-40C, Housing Material ABS, Warranty One/Three Years, FDA Certified, CE Marking, DNV Inspected