Support outside signal switch directly. Support USB/SD/AUX/FM automatical shift. Module includes the MP3 lyrics recode chip. Support USB, SD, MMC play. Supports last / previous song, pause, EQ (five modes), volume -/+, single repeat, mute, shutdown and direct election. Support FAT16, FAT32 file system. Support for MP1 Layer3, MP2 Layer3, MP3 Layer3 version of the song. Support 32-320 KBPS MP3 songs. Support power off memory function: memory the play songs and volume before power off.Support the date, time, according to the lyrics synchronization. Radio frequency: 87.5 to 108.0 MHz