After a few weeks, the right side stopped working on the first pair I purchased. Anker's customer support is very good though, replacement was sent to me quickly and haven't had any issues with the 2nd pair. I like that it comes with 4 different sizes of the piece that goes in your ear, and the part that you plug in is slightly less bulky than other similar headphones I've tried. They stay pretty comfortable even when wearing them for long periods of time, and the sound quality is as good as I'd expect for a $40 pair. I'll give this 5 stars if this second pair is still working in 6 months with no problems.
Pretty good for the price