From a mechanical point of view, many qualities: the hoop is not too tight, it is strong and easy to adjust, despite its light weight (an important asset elsewhere).
Aesthetics with sobriety (small retail reproach: I do not like the role of sandwich man, the mark on the back of the headphones is too obvious for me), nice pads.
Folds and unfolds very easily, atria of the rotation reducing clutter to a minimum and the articulation giving no sign of weakness.
Autonomy recorded much higher than announced.
I forgot to pack the adapter plug plane during a trip of more than 24 r / t, shame!
An online sale of spare parts would be welcome (studding, adapter plugs for dizzy misleads that provided original).
Winks: I would try gladly the same with a microphone, a PTT PTT and Bluetooth interface managing priorities and phone orders / radio / audio input.
Not to mention a correction function my last audiogram, wireless, and at such a competitive price !!!
John