3L/min Portable Battery Powered Rechargeable Oxygen Concentrator Air This portable o2 concentrator is

This portable o2 concentrator is equipped with a single battery

with an automatic shrinking function

of man-made light or indoor natural light and that of the darkroom is less than ±1%

It features direct point sampling and high accuracy of orientation

5cm small nozzle

3L/min Portable Battery Powered Rechargeable Oxygen Concentrator Air This portable o2 concentrator isOxygen Concentrator Description Lightweight and small size Weighing only 1. 5kg, the compact design makes it easy to carry with the handle or the included carrying case, allowing you to go out without the constraints of the machine. It comes with an AC adaptor, a car power cord, and an external rechargeable battery that can sustain for up to 2hours. With various power supply systems, it can accompany you in various scenarios, allowing you to make the