Very happy with this product that is a real plus compared to different bluetooth headsets I have had. Indeed spending much time by car for professional reasons bluetooth headsets made the soul easily because of the fragility of their attachments and I was not really happy to spend 2 to 3 hours with an ear glued device. With this headset can synchronize at least 2 phones and its very good that we can increase much more than with any headset that I have had, and especially my interlocutors hear me very well I am on Highway 130 with the noise that entails or city.
The operation is fairly intuitive and sounds strong enough to hear in the car, only minimal downside the multifunction key (green phone in the middle) is a little confusing at numerous functions precisely over other buttons including hang a call or mute the device.
Otherwise very happy with this purchase which is the best intermediary between a Bluetooth headset and a Bluetooth phone system already and already integrated in the vehicle.