Correct quality
Correct build quality, the fins around the ear show no signs of fatigue after several months and are rain and dust resistant as expected, listening distance of 10m+- before losing the signal.
The sound on the other hand is very mediocre in everything, bass, treble etc.. Except for the voices, which are clearly audible. There is also no application to adjust these headphones.
When I wear them when I'm working, I'm not afraid of dropping them, they hold up very well.