Good music quality - not price accordingly call quality

Here is my 3rd attempt to find a high quality Bluetooth receiver, this time in a different price level.
Tested with an iPhone 5c. The other 2 devices have failed in the audio quality on the caller side while phone audio music and call quality (my side) were very good.

1 - music playback very well
2 - processing very well, I know Jabra and had a lot of confidence that it is about well-made material.
3- and off automatically with the ignition I find convenient (my wife would never turn himself)
Flashes 4- if not connected I also still positive as a reminder (again a good thing for my wife)
5- Phone calls: This time I have a acceptable audio quality achieved with the interlocutor and the worst on my side!
6 when it comes to no more cables to have Jabra helps so much because just take batteries he needs power. However, this does point 4, just convenient for me.

Point 5 is barely tolerable but disappointing for a product of this price level. That is why a star way for price and one for the phone call quality.