I watched this item for quite some time before buying it because with so many reported sold I expected some reviews. The machine is of good quality and very quiet. In fact I can't hear it at all with my fan on. The instruction book was missing but it was no problem to figure out. Especially if you had read the full description about how the timer works. Turn it on with the power button and it will start with 15 minutes on the timer. Press the timer button again and it will go to 30 minutes, press again and it will go to 60 minutes. Press one final time and all three numbers light up and it will run for eight hours. It will run off a wall outlet, a car adapter (included), or battery. Battery and charger included. It has no meter so I don't know what purity it is putting out but I know I no longer wake up with a headache. Always turn it off with the power button. The breathing tube is so light you barely know you are wearing it. My only wish would be for longer tubing and a manual.Read full review
Verified purchase: Yes | Condition: New
It's like true lies. Is it portable? Yes it is. Is it Genuine? Yes it is. Is it an Oxygen concentrator Generator? I don't know, I guess it must be. Does it concentrate oxygen? Probably does (a bit). Does it generate oxygen? Probably does. Has it got a battery? It has. Do all those combined things add up to a healthy, beneficial effect? Not that anyone could tell. When you turn it on, you wonder when this wonderful oxygen is going to start. And you keep wondering while you re-read the instructions and check the original listing to see what you missed. Is it as described? Absolutely. Are the facts correct? Completely. Do they have any real relevance to the actual product? No, not really. Is anything they have said incorrect? No. You might as well stick your head out of the door for a minute or two and get some fresh air.Read full review
Verified purchase: Yes | Condition: New
It works well but the battery is only good for an hour, I need eight hours to make it more usable. I hunt so an hour use is just not acceptable.
Verified purchase: Yes | Condition: New
It is to noise. I don't like it at all.
Verified purchase: Yes | Condition: New
Air flow so low it's the same as not having it on .
Verified purchase: Yes | Condition: New