When unpacking, I was a little disappointed. The link between the two earplugs was indicated thicker and heavier than in the photo. The "hook" that surround the ears were not adaptable to his own ear as I was hoping, but can not be modified in shape.
The first practical test, however (I'm running now for about six months with that thing), however, are positive. The sound is OK (not as good as with Bose, but I'm not Soundfetischist, and the songs sound in my view well with the headset); The thick cable connection is present but does not interfere with wearing, and the headphones sit well in my opinion, in spite of the immutability of the ear pieces.
A logical flaw that I had not considered was that when running with cap in the winter, the earpieces are pressed against the bracket and vice versa. This may, depending on how close the cap sits partly sometimes be less pleasant. I would now not chalk up the headset as a shortcoming.
The battery life is far okay, although I no long runs have even denied (about 2h) with it. Bottom line is: "Running.". A run with wired headphones, I can not imagine, and at the moment I am completely satisfied with this model of Plantronics.
I would buy it again - a recommendation So from my side.