Modification and upgrading of ordinary audio, so that the audio can easily play U disk, TF card MP3 / WMA format song files, improve the sound quality of ordinary audio, with low prices to obtain an effective way of high-quality music; With other equipment, circuits, modules, and secondary development applications, applied to car audio, home appliances, broadcasting systems, etc., easy to achieve Bluetooth wireless docking, and listen to music at will. Specifications: Product Name: MP3 Bluetooth decoding board Product category: Audio Accessories Power supply voltage: DC 5V-12V Size: 75*50 (mm) Product power consumption: less than 150MA Product Model: B016B Main functions: (1) support led digital tube; (2) support for USB, SD (TF), AUX, and FM radio functions; (3) support Bluetooth, compatible with the following versions of Bluetooth 5.0; (4) support the previous song, next song, play/pause, and mode conversion; (5) Support FAT16, FAT32 file system; (6) Support MP1 Layer3, MP2 Layer3, MP3 Layer3, versions of songs; (7) Support 32-320kbps MP3 songs. (8) Support infrared remote control reception (9) Module contains MP3/WMA song decoding chip; Key operation instructions Host keys: 1. "PREV": in the USB/SD/Bluetooth state short press on a song; in the FM state short press on a radio station, long press the volume down. 2. "PLAY/PAUSE" in the USB/SD/Bluetooth state short press to play/pause, in the FM state long press to automatically scan the radio. 3. "NEXT": short press next song in USB/SD/Bluetooth state; short press next radio station in FM state, long press volume up. Package includes: 1 x Audio Decoder Board Player 1 x Remote Control (without battery) 3 x Cables