++ Good sound
++ Good, attractive design
++ Sports bag for mobile phones in the delivery
++ Easy and battery has enough stamina
+ Secure hold, even if it certainly gets even better
o comfort (in the ear and the head) could be a bit better, but certainly also from the personal type dependent.
First, a tip: you can see the headphone elements in the ear even to make a difference (20 degrees). So you can fix the headphones better in the ear and position the tape better. The tape on the back of the head or the neck has some space, with the slight displacement of the headphones, the band fits better however to.
Sonically it indicates the backbeat Fit nothing to complain about, I have headphones in the 300 Euro class and am actually quite pleasantly surprised by the sound quality of the backbeat. Music via Bluetooth sounds good, bass is there, that's all perfectly fine for the sport.
The headphones are also designed intelligent than you might initially think. These include in your ears not completely. This is really great for the sport in the street or at the gym. One gets a little with his environment. At the same time you hear a sufficient amount of bass. If you press the headset in your ears, you realize that the bass would clearly be too much of a good thing. Plantronics, the sound tuning so specially chosen so that the full sound arrives despite the "open" design in the ear. Ich finds cleverly solved.
In ear headphones themselves could sit more comfortable for my taste, here there is room for a second generation. But for 1-2 hours of sport does not bother extreme, but after a while begin the headphones to the press. This is something on material used. For hygienic reasons, relatively hard plastic was used for the earphone (the bar itself is made of a very soft material).
Overall it is a good headset with good sound. Compared to other products, for me so far the best solution.