Quick Details Place of Origin: Fujian, China Model Number: GE1-5L-W Instrument classification: Class II Warranty: 1 Year After-sale Service: Online technical support Product name: oxygen-concentrator Certificate: CE Voltage: 220V±22V ,50HZ±1HZ Input power: 320VA Machine noise: ≤45dB(A) Weight: 24 kg Output pressure: 20-50 kpa Product Size: 470*285*580 mm