My impression is that the headphones fit for purpose and the sound is pretty good, at least for me as a petrol normal handset. The cable acts rugged, the folding mechanism reliably and simply adjust the size setting.
There are in my view only to criticize that the handset rest on the ears (not enclose) and thus in the long run be uncomfortable and hurt the ears. He also blocks outside noise very little from (loud underground noises come completely). And the leatherette will cause you get sweaty ears.
Why buy recommendation, if you ever do not have the phone.