I return after a month of use:
Not so thick it behind the ear, we made it very quickly. Hold in place.
Bluetooth Connection and landed at the establishment on the ear ... and vice versa!
Very decent battery life (more than two days, I think, more airtime than average)
Remaining range, connection / disconnection bluetooth (when I'm too far from the telephone), incoming call: informed by voice message directly in the atrium (in English)
Pure happiness regarding filtering: my interlocutors can not say where I am (car, outdoor, office, toilets, ...)
Only flat (already reported) that confirms the sound level has the reception is weak hair.
Chosen for its ability to connect two transmitter (in loccurrence two smartphones: personal and work)
Nothing to say his issue: it is pure happiness. No breath to the transmission, yet I am often outside in a noisy environment. All my correspondents praise the "elimination of background noise" function thanks to two microphones.
Nickel reception.
Only downside (hence the missing star): a little thick behind the ear (but it's going and the more I do), and the sound is a low hair. (But again, I'm in noisy environments)
If you have nothing to do with the double connection, I recommend the Jabra Wave Bluetooth hands-free kit "earhook" HD (see comment).