... Radio:FM TC21 New bluetooth mp3Bluetooth USB/SD MP3 player moduleThree modes:Bluetooth hands-free phone, LINE IN(external input), MP3Multi- ... transform three modes: external bluetooth, LINE IN, MP3 MODE. In Bluetooth state, it shows "BLUE or call display". In LINE state, it shows ... to answer phone for bluetooth, long press for VOICE dialing.CLEAR/TRAN: in call, short press for bluetooth hang up, long ...