Stylish design - the first thing that caught my attention - the headphones are beautiful.
The speakers rotate 90 degrees, which means that the headphones can be hung on a special mount in a backpack, for example, in the Xiaomi Geek Backpack.
The arcs are adjusted individually to the size of the head - at the same time, they do not crack, click or play during adjustment.
Could be considered full size, I guess. Because safely close the ears completely.
The ear pads and headband are very soft and comfortable. And the seams are even.
They sit tightly on the head, in this parameter I would compare with the studio ones.
Soundproofing is comparable - heh - with building headphones: external sounds are much quieter, and if you yourself talk to someone with headphones on in standby mode, they tell you: "Don't yell." And you don't seem to be screaming. :D
While listening, I personally did not hear anything interfering from the outside - unless, of course, it is a jackhammer nearby. :D
Sound via Bluetooth can be described as quite decent. Bass is present. If you want a convex (ha ha) sound - Flat equalizer for Android will do you quite well - although without auxiliary means the sound is above average in quality.
There is a detachable cable jack jack 3.5. About the sound on it - in shortcomings.
The microphone is excellent. Talking on the phone through the headphones did not upset the audibility and transmission (and you, in fact, saw the microphone speaker here - take a look and understand!)
I tested for 30 minutes at a volume from high to the highest - they were not discharged by 1% of the original charge level! In general, an impressive listening time - 40 hours and 200 hours of waiting - is just a lot.