Features: The module uses the JQ6500 chip, which is an MP3 chip that provides a serial port, which perfectly integrates the hard decoding of MP3 and WMV. At the same for time, the software supports TF card driver, supports computer to directly update the content of spi flash, supports FAT16, FAT32 file system. Playing the specified music and how to for play the music can be completed through a simple serial port command, without the need for tedious low-level operations. Voice broadcast of car navigation;road transport inspections and toll stations;Voice prompts for safety inspection at railway stations and bus stations; Electric sightseeing car safe driving voice notice; Specifications: Material:Metal Size:Approx.5x2cm/1.97x0.79in MP3 File Format: Supports All Bit Rates 11172-3 and ISO13813-3 layer3 audio decoding; Sampling Rate (KHZ): 8/11.025/12/16/22.05/24/32/44.1/48; Support Normal, Jazz, Classic, for Pop, Rock and other Sound Effects; UART Interface: Standard Serial Port, TTL level; Input voltage: the best power supply is 4.2V between 3.5V-5V; Rated current: 20ma; Speaker power: 8 ohms/ 3w; Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/48; 24-bit DAC output, dynamic range supports 90dB, signal-to-noise ratio supports 85dB; Fully support FAT16, FAT32 file system; Multiple control modes, serial port mode, AD button control mode; Broadcast language insertion function, you can pause the background music being played; Audio data is sorted by folder, supports up to 100 folders, and each folder can be assigned 1000 songs; 30level volume adjustable, 10level EQ adjustable; Package Includes: 1x JQ6500 Voice Sound Module note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!