Uses SPI interface
Has a 3.5mm female (stereo) audio jack for output and microphone input. (two separate 3.5 mm connections)
Has a build-in microphone for sound recording
Compatible with the Arduino Uno and Mega
Has a micro-SD card holder (the chip on the shield supports FAT16 and FAT32)
For pinout see image with pin descriptions (pin descriptions with X refer to pins to the VS1053 chip)
Only works on 5V DC.
With this MP3 shield you can play various formats of music and have it controlled by your Arduino.
The music is on a micro-SD card that you can place in the micro-SD card holder on the shield.
In addition to playing music, this shield can also record music with the build-in microphone or an external microphone.