Pros: Decent audio quality, cheap
Cons: Not very comfortable, buttons can be a little sticky
So to be fair, I didn't use this headset for very long (just shy of a month) because it had a bit of an accident (I put it in my lap, forgot about it when I got out of my car, fell onto the pavement, got stepped on). But for the month that I did use it....it really wasn't very comfortable - in fact, it would actually start hurting my ear after a while. I thought maybe I just wasn't used to it...but no. It just hurt.
The audio quality on my end was okay but I found that sometimes I had to speak really loudly if I wanted the person I had called to be able to hear me/understand me. And of course, it doesn't filter out any background noise so when driving, I always had to shut off any music playing otherwise the person I'd called could hear it.
Also, the volume button just has two ends to it (for increasing and decreasing) and sometimes I couldn't get it to do what I wanted because the button was rather on the short side so I'd end up getting the opposite of the effect I wanted.
For a very basic unit, this one is okay (except for the whole physical discomfort thing). But in the end, I was really okay that it got stepped on and rather broken.