Feature: 1. Player Module: Supports both MP3 and WAV file formats, this music player module will provide you with great sound quality. 2. Simple to Use: You can insert the memory card in the on board socket, so you can freely enjoy more fair sounding melodies. 3. Great Control: The UART TTL serial interface can be used to control play mode, volume, switch music, etc., very practical. 4. Wide Matching: Designed to have high compatibility with for LEONARDO and for DUE, works with good stability. 5. Easy to Install: Comes with a compact size and a light weight, the easy installation can be quickly finished in minutes. Specification: Item Type: MP3 Player Module Material: PCB Supporting Frequency (KHZ): 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48. Supporting File Formats: MP3, WAV. Volume: 30 level adjustable volume. Serial Port: UART TTL serial port control playback mode, baud rate is 9600BPS. Power Supply: 3.2~5.2VDC Control: Control logic interface can be 3.3V 5V TTL. Compatibility: Compatible with for LEONARDO, for DUE. . Package List: 1 x MP3 Player Module1 x Pin Header