This MP3 board module is designed to facilitate modification. It supports ( memory card) and U disk play mode. With a micro USB port, through the , can use power supply or the USB cable to charge the MP3 battery, also can use 3.7V lithium battery, or USB 5V power supply. Features - Color: As the picture shown. - Material: Metal, PCB Board. - Power range: 3.7~5.5V - Product size: 45 * 36mm. - double board design, large area of copper, stable and reliable. - Using the -static bag packaging the module, to avoid the electrostatic damage in . - sound quality. - The module is designed to facilitate modification. - No soldering with speaker terminals for easy wiring. - Support ( memory card) and U disk play mode. - Support U disk (test 32G), (test 16G) play mode; power on default mode, if the does not exist automatically jump to disk mode, and both devices have installed,then you can manually set the play mode. - Support MP3 format, playing power on automatically.When mp3 is played the red LED flashes. - Buttons can be adjusted to control songs,volume , pause or play, mode switching. - Press menu button enter the single/ all song play mode. The default mode is the all song mode when . Pressing the Repeat button can replace the circulating mode. Package list: 1 * U Disk MP3 Format Board Amplifier Audio Player Module