... LINE IN2 / FM / AM / USB PLAY / SD PLAY(In USB/SD card can play MP3/WMA format automatically ... switch between "FLAT,CLASS,ROCK,POP,EQ OFF.7,USB/SD -> Last trackFM/AM -> Short press,last ... radio station Long press:Frequency-.8,USB/SD -> Next trackFM/AM -> Short press,Next ... radio station Long press:Frequency+.9,USB/SD -> Play/pause.FM/AM -> Automatic search,automatic ...