... loudspeaker system3, use car loudspeaker system to answer or make the phone call, Answer, make, reject and end calls easily and ... amplifier to power the 4 speakers of the car7, the sound of Car audio will be back automatically when you end the callFeatures: 1, Wireless ... sound system4, Playback of music files stored on the mobile phone also via the car's sound system5, Automatic radio-mute function ...