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Features:  Rechargeable In Car: If you’re away from home, you can easily recharge your oxygen concentrator in your car. Light, Mini and Portable. Only approximately 0.84 kg(1.85 lb), easy to carry. 2 Hours Battery: The battery can be used 2 hours after fully charged. Low Noise: At...

Features: Suitable for us at home, gym or sports training center Specifications: High Oxygen Flow 1 to 5LPM Oxygen Purity 90%@1-3LPM Hypoxic Flow 30LPM Hypoxic Purity 12-15% Net Weight 8.3kg≈18.3lbs Noise ≤ 55 dBA  Dimension 407mmx239mmx348mm Power consumption  195W Voltage 110V,60HZ/220V,50HZ Package:1×POC-03H Hypoxic Generator1×Buffer Bag1×Mask2×Tubes

1-7L Adjustable Pulse Flow, 8L Continuous Flow 93%±3% High Purity Small and Lightweight: 7.17*3.41*8.39 in , 4.85lbs 5.5 Hours Battery Life Continuously Work All Night AC/ DC Power Support, Home&Car&Outdoor Use Low Noise

1-9L Adjustable Pulse Flow, 10L Continuous Flow 93%±3% High Purity Small and Lightweight: 7.17*3.41*8.39 in，4.85lbs 1.5-5.5 Hours Battery Life Continuously Work All Night AC/ DC Power Support, Home&Car&Outdoor Use Low Noise

1-5L Adjustable Continuous Flow 90%±3% High Purity@1L 95*196*242mm, 5lbs 2pcs Batteries 120 Minutes Battery Life 24/7 Continuously Work Convenient Removable Battery