*** info can be found here

VS1003 MP3 DEV Module (MP3 codec/decoder module)

• Can play a variety of music formats (MP3, MP3 + V, WMA, WAV, MIDI, SP-MIDI), support for OGG encoding real-time recording
• SPI interface, the control signal lines are led out
• A headphone and stereo output
• A microphone for recording
• A line_in input interface
• Power indicator
• 3.3V and 1.8V of LDO chip AMS-1117 on board, provides up to 800mA current
• A single power supply: +5 VDC, filter capacitor
• 12.288 Mhz crystal