This is a player module with a remote control. The module supports three music formats, MP3, WAV and WMV, which can be input via micro SD card or U disk. The module has 6 EQ modes, Normal, class, jazz, rock, bass and pop, which can meet different hearing needs. If you want to DIY a player, this module is a good choice.
If you want to use key control, you can modify the board, the schematic diagram is as follows: