Everything is fine with two negatives. They have touch sensors exactly where I want to press to put them back in my ear after they start to fall, resulting in me hanging up on the person I'm talking to or unintentionally stopping the music, just trying to "fit it in my ear". But well, maybe this is a matter of habit.

What bothered me the most is the battery, which lasts - without exaggeration - 5 MINUTES! I connect them to my phone as soon as I have charged them and it says 90% battery, but by the time I take out one earbud, it goes down to 70%. Not to mention that within 5 minutes, whether I'm listening to music or talking, the battery is completely drained. I hope I got a defective pair and can return them to get another one.

It is very difficult to operate. I am still trying and unable to use them, I do not understand how they work

At first, I was disappointed because I didn't know how they work. Since I learned, I have been quite satisfied. The sound is pretty good, the bass is not that strong but for their price, it's good. The microphone is very good, you can hear and be heard very well. I even tried exercising with them and I have to say that I was amazed, they don't fall off at all. They are satisfactory for their price.