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...