Very good with a few minor flaws.

Very good article very easy to use. I use it for music and the GPS on my phone. (I do not phone at the wheel so I have not tested this feature). I noted some slight defects:
- Not excellent sound quality (but quite sufficient for listening to music in the car)
- The cigarette lighter disconnects too easily (a retarder may suffice)
- The FM Transmitter is a little low and we can find parasitized by neighboring radio stations

After the positive
- Automated Search unused frequency that is a real plus that works very well
- The USB plug into the cigarette lighter a very good idea
- His fixation on the dashboard is very well thought out.
- Works perfectly on Sony Xperia Z2!