Good good good 1

The sound is very good
The microphone sounds great: my interlocutors complain less than dedicated hardware ....
The battery fits easily the day with a fairly intensive listening (6/7 am listening, not extinction for 12 to 16h)
The functions of the headset buttons deserve a little learning but record (although very succinct) is clear enough to be able to learn to use the device effectively.
The voice instructions, although in English, are very clear and practical.
The packaging is very good.
If we wanted to nitpick, the cache that helps protect the location where you plug the charging cable (standard) is a little difficult to remove. But it really takes to detail.

Beware of strength nevertheless. I think it is better to carry in a pocket dedicated a mimimum protected. The attachment of the cables and headsets (which quite apparent) risk being weakened. The green band is also adhered to position the headphone listening (well thought out) but it causes some skirmishes in the backpack ... It could have been nice to provide a small carrying pouch.

Moreover, the after-sales service is very efficient: I had received a first model weakened me and replaced without question very quickly.
Several in-ear adapters are provided with different shims models (to avoid the atria to move)

The function to pair two devices simultaneously nevertheless works because I disable it generated some unpleasant disconnections, especially when one is in the talk.