MP3 module. 

Onboard 2W mono amplifier for driving speaker terminals

   (recommendation 4Ω 3W speaker) 

3.5mm gold plated speaker jack for external stereo audio. 

Power from micro USB socket 

Play from TF Card (micro sd card) or USB pen drive. 

With speaker terminals for easy wiring of mono speaker,

  or 3.5mm jack for computer type amplified speakers. 

Product Overview: 

1) Support MP3 format, playing power on automatically.

   When mp3 is played the red LED flashes. 

2) Support USB pen drive (max 32Gb), micro sdF/T Card (max 16G)

play mode; power on default micro sd/TF card mode,

if the micro sd/TF card does not exist automatically jump to

the USB pen drive mode,and if both devices are present,

then you can manually set the play mode. 

3) Buttons can be adjusted up and down to control songs,

volume up and down, pause or play, mode switching. 

4) The default mode is "Repeat All" mode when powered up.

Pressing the Repeat button will toggle the "Repeat All" & "Repeat Song" modes. 

Key Operating Instructions: 

"Prev / V--" button: "Press" for switching previous song,

   "long press" for volume down 

"Next / V++" button: "Press" for switching next song,

   "long press" for volume up. 

"P / P / Mode" button: "Press" for the "Play/Pause" Switch,

   "long press" to select USB pen drive / micro sd (TF card) mode. 

"Repeat" button: "Press" for “Repeat All / Repeat Song" mode (no long press) 

LED Blinks slowly in "Repeat All" mode, and faster in "Repeat Song" mode

Module will automatically play first song at power up and will continuously

play all tracks then restart from the beginning, over and over again.

If you have a single mp3 file, it will play over and over again forever.

The module will remember which track was playing if it is powered off

(or USB drive removed), and it will restart this song when

powered back up / USB reinserted.

Note: 

"Long press" approximate 2 seconds. 

Product Specifications: 

Power range: 5V 

Product size: 45mm*36mm 

Exquisite double board design, large area of copper, stable and reliable. 

Package included: 

1x   MP3 Format decoder board module amplifier decoding audio Player