DK
The Varon is the first oxygen…
The Varon is the first oxygen concentrator I've purchased, so not much to compare it to. The unit seems well made and is fairly quiet. However, I have two complaints. The instruction manual lacks detail and is poorly written - probably because it originates from China. Second, the digital indicator for the flow rate doesn't seem to correspond to the settings and it's never the same when you switch back to previous settings. Other than that, it seems to work fine.

