Advanced technology incorporated for precise oxygen concentration control to 29+/-2% for rich oxygen achievement.Noise below 45dB,it can work all the night.

Includes a chargeable battery .The oxygen concentrator can be used in a car and even the place without power supply.Good for your travel.

Simplified concise control system with intensive design under the control of only 1 knob.Including a battery .Charge 4 hours, you can use for an hour .

This machine incorporates physical mechanism to generate and supply rich oxygen of 29+/-2% concentration by the means of vacuum

pump and macromolecules.