Scam, it isn't even mono as it says. They just took a left earbud and left it on its own. Stay away.

It is one of the few with an angled plug, which makes it very practical, as does the fact that it has only one earphone. For me, since I only want it to answer the phone and not for music, it is perfect. I can easily wrap it around the cover of my book-style case and it doesn't get tangled at all. It is very cheap and even if I need to replace 4 of them during the year (if they break), it still costs me much less than other expensive ones, which also break quickly. For social media videos, it is just fine, but of course for music and movies it is not suitable, in that case you need a double earphone.

Excellent for its price. Its microphone and switch work without any problem and it doesn't get tangled much due to the texture of the cord it has on the outside and the single earbud. I am satisfied and I regret not getting another one because it is very thin and I don't know how long it will last. However, since I have a hard time finding headphones with an angled plug, I would definitely buy it again, even at a much higher price.

New update after a year: After about a month and a half, one earbud broke. But I got so used to its size that I did the following: instead of buying more expensive ones (which also break right away), I bought 5 headphones that cost me 6-7 euros and lasted 8 months. This is what I intend to do again. Even if I need 10 pieces a year, it still comes out cheaper than the others. Of course, it bothers me that I create so much electronic waste but...

Decent headphones for their price.
The cable is very thin and gets tangled relatively often.
The fit of the earphone is better than more expensive headphones I have purchased.
Sound is fine.