Bought a bluetooth handset,
Opened it,
Wired a very first version of my circuit,
Power supply + sound amplification + big speaker,
Testing the bluetooth connection to the phone.

Thanks to Théo Reichel, technology superviser.
http://www.complex.ch/ – modprobe.complex.ch

[youtube:http://www.youtube.com/watch?v=NzUsNqKdg5o]