Well, I bought it a while ago and it never worked. I don't know if it's the store's fault or the manufacturer's, but I wouldn't recommend it in any case. As for performance, comfort, etc., I can't know since, as I mentioned before, it never worked.

They disconnect every 2 minutes or so for about ten seconds, and the sound is temporarily transferred to the speakers (if there are any, otherwise nowhere).
Yes, they are very cheap, but you take a big risk that they are problematic. It's better to avoid them.

We got them for web conferencing at work. They have a problem with constant disconnections, which has been confirmed by other colleagues. They are tiring for long hours of use

Unfortunately, in the two years, the sound started not to be so good. The microphone left me in the first 2 months of normal use. Nevertheless, for the 13€ I paid, they were worth it.

For this price, it may be a satisfactory option, but it is definitely not suitable for extended use as the ears sweat after a while. Also, something is happening and the microphone produces strange sounds like static electricity that others can hear (buzzing sound) which, after a lot of searching and testing on different devices, I couldn't find a solution for.

Good sound and microphone. At first, it is comfortable but after 2 hours it's not as much, but guys what else do you want, they don't even cost 10 euros and they are the best you can find at such a price. This is the second time I buy them after 1.5 years, in my opinion, that means something.