home oxygen generator, portable oxygen concentrator, 30% -90% Air flow volume: 0-5L Product Net weight: 9.5kg Oxygen Concentrator, oxygen generator, portable oxygen concentrator, Oxygen manufacture method: Pressure Swing Adsorption(PSA) Suction mode: Adopt earphone typeAir flow volume: 0-5L/minOxygen concentration: 30%-90%Input Power: 170WRated voltage: 220V±15VRated current: 0.8ARated frequency: ...