... .charger for NOKIA,MOTO,SAMSUNG 3.one key to swich channel 4.accept OEM car MP3/MP4 FM transmiitter 1.charger for ... status3.support SD card,mp3,movable hard disk directly4.one key to swich channel design,it can be used more convenient ... .5.excellent sound quality,extreme music experience6.car cigarette lighterpower supply(12v DC) .