It is true that the headphones do not completely fit in your ear. But personally it does not bother me and I find the right sound. In addition, it lets you listen to the sounds around so as not to be 100% offline (it is rather reassuring when we run, and you have not the ear canal soaked in sweat). It would be for use other than sport, and so rather audiophile, I mind (because the fact that they do not completely fit makes you lose a bit of the sound spectrum).
But the main problem is the small cuts (they last only one second). I have identified a dozen in a run of 1H. Someone seems to say that this is common with bluetooth devices .. this is probably true, but it's a bit boring. I have a Samsung S4 mini .. so last generation smartphone ..
Apart from this last point, it is a good value, although I would be willing to put a little extra to not have those pesky micro cuts.
