The sound quality of the microphone is quite good, but it will take the shape of the arch is adapted to your head. For my part, I felt it when I distort the Calais well behind the ears, and he always ended up slipping and the microphone was not at all to her mouth. The impression of fragility of all that we do not dare try to "bend" the hoop to adopt the right shape, for fear of breaking it. So I sent it back, but still leaves 3 stars for the mic value for money itself.