This device perfectly meets my expectations: extremely simple to implement (contact synchronization with iPhone 3 GS almost immediate) significant autonomy (no battery recharging for more than one month), simple to use, with " magic words "(voice command), its good both for me in the car as my interlocutors. Small problem, we need some time to adapt to pronounce satisfactorily contact names (hint: preferably announce the first names that are recognized more easily than family names). Other reserve: the automatic function discount when you board the vehicle is not always effective, but it is not inherently annoying, simply knowing. Otherwise no complaints, the finish is very good, he moved very easily on the sun visor (careful, if you turn down, the kit can be found on the wrong side ;-)). I have not yet tested the pairing with a second phone, but if done as easily as the first ... As for delivery, perfect as always, arrived 24 hours earlier than expected! In conclusion: a great device, much easier and comfortable than a headset, which will keep all points allowed, I recommend it without reservation.