Excellent! I could not be an effective commercial truck driver without this device in my SEMI. Everyday, I deal with altitude air pressure changes, dust, and engine exhaust exposure which effect my brain health during the 14 hour work period. Oxygen compressed air canisters aren't allowed so this is the only solution. (CO) Carbon Monoxide (CO) A colorless, odorless gas resulting from the incomplete combustion of hydrocarbon fuels.

Varon is a deceptive company which… Varon is a deceptive company which employs the bait and switch technique to rip off customers with generators that cannot produce more than 32% oxygen- far less than any person needing oxygen requires. They ship from china and won’t take returns. Buyer beware of this fraudulent junk factory

Poor Customer Service. The product works fine. It is louder than they state it is. The customer service is non existent. First off, they state if you pay with pay pal you get 15% off. Nope, didn't happen. Wrote the company, no response. I've written them regarding the machine being loud. No response. My o2 numbers improved. The product arrived quickly but don't expect any type of service.

The product broke down after less than 6 months Most of these reviews have to be bought. I purchased a unit a little under 6 months ago. It started over heating to the point of it smelling like fire about 3 weeks ago. I have not been able to use it since. Their customer service is obviously in some Asian country and they do not care, they provide no solution and no help. They just say they will give me a 20% discount to buy another unit. Why is this company selling in the US a medical device and they will not provide any support? The way this company acts I doubt this even produces any oxygen at all.

Fast and fair company to deal with. The unit arrived very fast. It worked beautifully except I couldn't get it to work off the battery. It didn't seem to charge. I reached out to the company and they sent a replacement battery right away. It works great now and I appreciate the light weight machine. I went out with it today and everything worked just fine. I would recommend this to anyone in need.