From the first day the right earbud started having problems and 2 days later it stopped working completely

Evaluation based on price and competition in this budget. Honest sound, decent 3D for PC gaming. The microphone is a bit muffled, as if you're speaking through a mask, that's how your voice sounds to the other person. Connectivity via Bluetooth and 2.4GHz through dongle. Via Bluetooth, there is a noticeable delay, almost like watching a Spanish movie with dubbing. With the dongle, the delay is minimal. Sound cannot be played via Bluetooth when the dongle is connected to a second device, e.g., a laptop. The dongle takes priority. Lightweight, the battery lasts 3 hours with the dongle at maximum volume. Of course, they also become tiring after three hours.
For the money, 5 stars. If you want something similar but more high-quality, three options: SteelSeries buds, Sony, and Asus... 6-7 times higher in price...
Update...
3 months later, I randomly picked them up again.
With the dongle, the sound is lower; they automatically reduce the volume to a safe listening level. You need to turn up the volume from the headphones, not just from the device, to get them to maximum.
I was impressed again by the sound for €30 in FPS gaming.