Pros: cheap, decent build, good range
Cons: uncomfortable after long hours, not comfortable while wearing glasses
I've used mainly on-ear headphones for the majority of my life. I tend to listen to music roughly 2-3 hours a day, sometimes up to 6 hours depending on what's going on. I bought these headphones mainly because I needed a quick replacement for a different pair of headphones that I had unfortunately broke. I was actually mildly impressed with what frequency range they do have, delivering pretty decent mids to upper lows, but falls short definitely in the sub-bass ranges. They do tend to over saturate the highs, but that could be a multitude of variables so that's not something I'm taking into much consideration. I'd say the most impressed I've been with these is when I fired up the recent remasters of Pink Floyd's "Dark Side of the Moon", and the dynamics that these headphones were able to produce for the price was quite nice.
They are, however, quite uncomfortable after a good 2-3 hours of straight use (no adjusting or removing). I wear prescription glasses, and cannot see much of anything without them, so I do tend to at least try to wear them while having my headphones on. I have worn many, many on-ear headphones while wearing glasses, and being uncomfortable while wearing glasses is to be expected for me. However, these tend to place a little too much pressure on the tops of your ears, which in turn forces my glasses to dig into the back of my ear. Not a big deal for an hour or so, but after a while it definitely starts hurting. Now, if I don't wear glasses with them, I don't experience any discomfort, but I also do not wear them as long due to the fact I tend to keep my glasses on as much as possible.
If you're expecting these to sound like $200+ headphones, then of course you're going to be disappointed. But, if you're looking for something to just relax and enjoy some music for a short amount of time, they're definitely worth the price in my opinion.