This is powerful for a small oxygen concentrator. The sleep mode is super quiet, can't hear it. The low mode makes a white noise kind of sound, which is audible but not disturbing. East to fit on a shelf due to the small size but covers a good area. Can feel the air being cleaner pretty quickly. I have a bigger one on my first floor and wanted a smaller less expensive one for my bed and it does the trick.
I am satisfied and recommend this oxygen concentrator to anyone who wants to experience clean, crisp, bedroom air!!!!!
I use these in my office and home and they work so well! They are the perfect size and don’t take up too much room.
Absolutely love everything about this product. It’s quiet or loud, the looks, and Highly recommend!!!!
Have noticed a huge difference since using them
Are great if I knew about it that help me with my breathe Easier. Should have bought it long time ago.