These headphones are the perfect blend of everyday use and music. The quality of sound is remarkable. They fit very well in the ear and the battery is equally good, as I use them very often inside and outside the house. I have had them for almost 1 year and I have the following notes to make:
In public places, or in closed spaces with people, due to the type of microphone, the microphone picks up almost every sound other than your voice. Generally, in these spaces, it sounds quite bad.
Also, I don't know if it's a problem with my model, but the touch button for pausing/playing music is quite loose. I may want to put on/take off/adjust the headphones better and the music stops/starts. But with a little attention, it's okay.
Overall, it's a purchase worth it for people who want earbuds with good sound at a low price.

Especially for a very reasonable price, they are very good. Compared to more expensive ones I had in the past that stopped working, they are much better.

The earpiece application is not at all convenient and it tires me after a while. The music plays generally low and it's not something exciting. The calls are quite satisfactory, my interlocutor hears me clearly.
Overall, it's better to invest in something slightly better if you use headphones daily and for a long time.

It was good in terms of sound and comfortable for as long as it lasted, which was about 2 months. After that, problems started.

Maximum usage: 2-3 hours per day.
Usage: on a laptop for video playback. It has not been used for phone calls.

1. The sound in the headphones sounded like surround sound after 20 seconds of use. If you paused and then played again, it would fix for 10 seconds and then go back to the same issue.
2. The left earphone keeps disconnecting after 30 seconds of use. Factory reset/unpair/pair only fix the problem for the same duration, which is 30 seconds.

In general, they can no longer be used as a pair of headphones because only one of them works after attempting to connect to multiple different devices.

Very good choice: high quality-durable, instant connection, long battery life, excellent sound (music, conversation and listening).

Personally, I wanted something similar to the xiaomi and these were just what I needed for in-ear headphones. They also have a similar case, and they really last a long time compared to others that only last 5 hours or less. They charge relatively quickly, in about 20 minutes. The only negative thing it has, which doesn't bother me, is that, as the friend above mentioned, you can hear some interference at low frequencies.

Update: After almost a year of use, they are still going strong. I use them for 12 hours a day and they haven't had any issues. This is the first time in my life that I have had headphones last this long. Usually, they would break in 1-2 months, especially those with a Jack cable. I am seriously considering buying another one, maybe even two!