The sound quality is not at the top: very low volume means a noise (sort of breath) that we forget as soon as one goes up the volume a bit.
The microphone seems to produce sound correct for the correspondents.
The big highlight is autonomy. My first load allowed me to use 3 weeks with many calls and many hours of listening.
The scope of cons is not exceptional, as good as my other samsung headset (in-ear).
Overall I am very satisfied for my dual use (music and phone in the car and at home)
