Newest 3L Portable Oxygen Concentrator Machine With 2 Rechargeable Batteries and Carry Bag

Mini Portable Oxygen Concentrator Machine/Oxygen Generator with Headset/Advanced Portable Oxygen Machine With 2 Rechargeable Batteries for Home, Travel, Car   Convenient Earphone Breathing Apparatus: Suitable for old people, children, pregnant women, students, outdoor sportsmen, housewives, altitude sickness patients, brain workers, travelers, etc.   SUPER LIGHTWEIGHT: The weight of this 3L/mins mini Portable Oxygen Concentrator is just 1kg(2.2Lb). It is super lightweight for you to take it anywhere and no need to worry about using time with long standby 2500mAh rechargeable battery. It can work for about 2 hours continuously with a rechargeable battery.   Outlet: ≥3L/Min. Oxygen Concentration: Approx 30% ±2% (standard atmospheric pressure). Easy to operate.   DOUBLE CLEAN FILTER: Our newest portable oxygen concentrator machine is adopted a double clean filter(biochemical cotton filter and oxygen permeable membrane filter) system for killing bacteria, viruses, and contaminants, which p