I bought this product for one month now. I use it mainly for sport and it is frankly very suitable compared to others I've tried before (including jaybird ...). Even in "normal" use it is rather practice no longer take their hands in their son! The sound is pretty good, it fits comfortably during my jogging, the battery has a good battery life.
Areas for improvement: * Impossible to skip to the next (or previous) using the buttons (with iPhone). It's a shame. * The microphone is very bad. Difficult to be heard over the phone.