... you to output audio from this navigator to your car stereo speakersBluetooth function can make you handsfree to pick up ... , Russia, Hungarian, Poland, Turkish, Finnish, Romania, Malaysia etc. 21) FM TRANSMITER , AV IN(optional),bluetooth ( optional ),ISDB-T(optional),DVB ... Mass storage USB 2.0 full speedAV/FMBuild in FM transmitter Optional functionOptional for AV-In Function and BluetoothHeadphone ...