Dimensions: 106*25 (mm) Product power consumption: less than 150MA Model: V19 (Remark: DC power supply 5V/12V optional) Product Category: Audio Accessories One: module function - audio, controllable player, household appliances, industrial applications 1, the production of simple audio, simple, cheap, suitable for the popular mid-range consumer market: 2, transform and upgrade the ordinary audio, so that the audio can easily play the MP3/WMA format song files in the U disk SD card, improve the sound quality of ordinary audio, and obtain effective music at low prices; 3, with other equipment, circuits, modules, secondary development and application, used in toys, gifts, fitness equipment, household appliances, broadcasting systems, etc. 4, easy to achieve Bluetooth wireless docking, listen to music as you like. Two: main functions: (1) Support led digital tube; (2) Support USB, SD (TF), AUX, FM radio function; (3) Support Bluetooth, compatible with Bluetooth 3.0 and below; (4) Support the previous song, the next song, play/pause, mode conversion; (5) Support FAT16, FAT32 file system; (6) Support MP1 Layer3, MP2 Layer3, MP3 Layer3, version of the song; (7) Support MP3 songs of 32-320 kbps; (8) Support infrared remote control reception (9) The module contains an MP3 song decoding chip; Three: button operation instructions Host button: 1. ''PREV'': Short press the previous song in the USB/SD/Bluetooth state; short press the last station in the FM state, press and hold the volume down. 2. ''PLAY/PAUSE'' short presses play/pause in USB/SD/Bluetooth status, long press auto scan station in FM state; 3. ''NEXT'': Press a short button in the USB/SD/Bluetooth state; press a station shortly in the FM state and press and hold the volume. 4. ''MODE'': When there is SD card and U disk: the switching sequence is USBSDBluetoothFMAUXUSB; only U disk: switching sequence is USBBluetoothFMAUXUSB; only SD card Time: The switching sequence is TFBluetoothFMAUXTF