Features: 1. Supports MP3 and WAV decoding formats. 2. Supports sampling rates (KHz): 8/11.025/12/16/22.05/24/32/44.1/48. 3. 24-bit DAC output, dynamic range support 90dB, signal-to-noise ratio support 85dB. 4. Fully supports FAT16/FAT32 file systems, maximum support for 32G TF card. 5. Comes with a 5W Class D amplifier, can directly drive 4, 3~5W speakers. 6. UART serial port control voice function, can control playback, pause, song selection, volume addition and subtraction, etc., a maximum of 65,535 songs, baud rate of 9600bit/s. 7. Supports IO trigger playback function, 8 IO ports trigger 8 tracks or 8 IO ports to trigger 255 tracks. 8. Supports One_line single-bus serial port control, can control playback, pause, song selection, volume addition and subtraction, and other functions. 9. Supports 3 configuration IOs for up to 7 working modes, knob switch settings are simple. 10. Module interface and function definition and high quality: DY-SV5W Dimensions: 4x4cm/1.57x1.57inch Color: Blue Material: Plastic Package Contents: 1 x Voice Playback Module (Note: Only the above package content, other products are not included.)