Portable Oxygen Generator System, Adjustable 1-7 Liter Oxygen Concentrator Machine

I should be able rate this machine for what it's worth I need replacement filters a no one can help me out with this issue. BS in my book.

Had to return.

This unit has exceeded my expectations. It’s very efficient, and the air quality it provides is exceptional. The easy-to-read display and straightforward controls make it a breeze to operate.

This machine is fantastic. It’s sleek, modern, and operates quietly. The oxygen flow is consistent and has greatly improved my quality of life. The ease of use is an added bonus.

I’m very impressed with this oxygen concentrator. It’s efficient, quiet, and easy to use. The oxygen flow is consistent, and the machine’s compact size makes it perfect for home use. It’s also lightweight and portable, which is a huge advantage. I’m very satisfied with its performance and would recommend it to others.