Oxygen Concentrator - 7 Liter Oxygen Concentrator Machine for Home Use, 1-7L/min Adjustable for Oxygen Therapy Breathing, with Remote Control and Accessories, 110V Home Medical Equipment

Its oxygen supply effect has not been publicly disclosed, so it not only cannot meet my daily needs, but also has problems with poor contact of the charging interface, and even leakage, which has seriously affected its use. I have applied for a refund, but it will not be refunded once the return is approved. I will never buy anything from this seller again, it was a very bad purchasing experience.

This machine took me directly to the emergency room. The advertisement for this machine states that it can be set up for quantitative oxygen supply, but when I started using it, it was far from achieving my expected oxygen supply effect, and it also caused my original illness to start showing symptoms, which will never be forgiven. It is obvious that there is a problem with this machine, which is very irresponsible behavior.

This product is not the same as the introduction, it is more different to use ,and the oxygen production effect is not good

if used too long the thing becomes dangerous to operate.had to pay a technicion to look at it.he said dont use could explode. company wont acknowledge warrenty.wasted 500 dollars.amazon wont get anymore pf my money

The machine is not working. After the machine was powered on, there was no response, and the only nasal tube in the box before the intubation was torn. I don't know why, but I asked the buyer for the reason and still haven't received an answer. The product quality is worrying, and the service is not good. Returning the package without a full refund is unacceptable.