3L Continuous Flow Oxygen Concentrator Battery Up to 8 Work Time 16 small size

small size

Can it be used for overnight sleeping

focus distance

and an external rechargeable battery that can sustain for up to 2hours

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3L Continuous Flow Oxygen Concentrator Battery Up to 8 Work Time 16 small sizeProduct Advantage: 1. Long working time: 24hours continuously plugged into a wall or car power outlet, the battery is up to 8 hrs continuously 2. Light and Portable. Only approx 1. 8 Ibs, easy to carry. 3. Low noise, mute motor, physical oxygen generation. Below 50db. 4. Convenience: It provides a continuous supply of oxygen without the need to store and replace cylinders. 5. Reliable and easy to maintain. Just keep the intake filter clean and clear