Asynchronous serial port control
Support MP3, WMA and WAV fortmat music.
Compatibility with FAT16 and FAT32 filesystem.
Support microSD card and USB disk.
16 levels volume control.
8 kinds of EQ.
Support selecting music by filename or file number.
Support expanding PA.
Support Li-ion battery Power supply.
Support calendar function.
Audio module datasheet
Arduino Library for Audio Module