Advanced MP3 Audio Features: The Player Mini is a versatile MP3 module that decodes multiple audio formats with excellent stability and performance. It supports MP3, WAV, and WMA formats, ensuring compatibility with a wide range of audio files. Expandable Storage Options: Equipped with both TF card and U-Disk support, this module allows you to easily expand storage for your audio files, making it perfect for dynamic audio projects. Flexible Control Methods: Control your audio playback through methods including IO or serial port commands, providing versatility in how you manage your projects. Compact and Reliable: Its compact design makes it ideal for embedded audio applications, while its robust construction ensures long-lasting performance in demanding setups. Supports MP3, WAV, WMA decoding Supports FAT16 and FAT32 file systems Supports up to 32GB micro-SD card and 32GB USB flash drive, 64MB NOR FLASH Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.4/48 24 bit output, dynamic range support: 90dB, signal-to-noise ratio support: 85dB Multiple control modes are available: IO control mode, serial port mode, and AD button control mode can be used in conjunction with power supply batteries and speakers. Supports up to 100 folders, each folder can be assigned 255 tracks 30 levels of volume adjustable, 6 levels of EQ adjustable Working voltage: 3.3V-5V, recommended 5V, maximum not exceeding 5.2V Interface: Pin set interface Due to different batches, there may be differences in product printed text, which will not affect use Colour:As Shown Material:PCB Package Contents: 10 x Mini MP3 Player Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.