This hands-free car kit isn�t visible, as the electronics box, for instance, is installed behind the radio or hidden beneath the console. It can certainly make itself heard though! Thanks to the Bluetooth A2DP protocol, music files which are saved on your mobile phone can be played back in stereo through the speakers in your vehicle(2). It also goes without saying that the sound quality with telephone calls is superb. This is made possible by the built-in DSP processor that filters out almost all of the driving noise.