Features: Can play a variety of music formats, 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 2.8V of LDO chip AMS-1117 on board, provides up to 800mA current A single power supply: +5 VDC 12.288 Mhz crystal TF card slot Decodes formats Ogg Vorbis MP3 = MPEG 1 & 2 audio layer III (CBR+VBR+ABR) MP1 & MP2 = MPEG 1 & 2 audio layers I & II optional MPEG4 / 2 AAC-LC(+PNS), HE-AAC v2 (Level 3) (SBR + PS) WMA4.0/4.1/7/8/9 all profiles (5-384 kbps) FLAC lossless audio with software plugin (upto 24 bits, 48 kHz) WAV (PCM + IMA ADPCM) General MIDI 1 / SP-MIDI format 0 Package included: 1 x MP3 Music VS1053B shield board with TF card slot work with Arduino UNO