modul decoder usb mp3 player Bluetooth 4.1 3.7 5v

Description:
Support for Bluetooth 4.1, support automatic return function, support WAV + APE + FLAC + MP3 lossless decoding, stereo output, comes with TF card download, support U disk, TF card player.
Parameter:
Power Supply: 3.7-5V
SNR: 90dB
THD+N: -70dB
Crosstalk: -86dB
DNR: 91dB
Support Profile: A2DP/AVCTP/AVDTP/AVRCP/HFP
LOS: >15m
Interface specification:
Power interface: Universal Micro USB 5V power supply
3.7-5V supply pad: 3.7-5V power supply modification
U disk interface: Support play U disk MP3 / WAV / APE / FLAC file, support FAT16 / 32 file format
TF card interface: Support play MP3 card in the MP3 / WAV / APE / FLAC file, support FAT16 / 32 file format
LED indication: Bluetooth mode blue light long, music mode blue light flashing
3.5mm stereo output: Standard 3.5mm interface, the output stereo sound source, can be inserted headphones, connected amplifier and other equipment.
Key&Function:
MODE: click it once TF card, U disk, Bluetooth mode switch
P/P: click it once Play and pause the switch
NEXT/V+: click it once The next songKeep pressing The volume increases
PREV/V-: click it once On a songKeep pressing Volume down
RPT: click it once Single / loop switch
Instructions:
1.mode control
When the decoder board is not inserted U disk or TF card, boot the default is Bluetooth mode; when the decoder board plug U disk or TF card, boot the default music mode; MODE key to switch mode.
2.music mode
Insert the U disk or TF card to play the stored audio files.
3.Bluetooth mode
Switch the mode broadcast English "The bluetooth device is ready to pair", that enter the Bluetooth mode and wait for the pair; mobile phone Bluetooth search to the "XY_BT" is the decoder board device name, click on the link, the decoder board prompt "The bluetooth device is connected successfully", Indicating that the decoder board and mobile phone connection is successful, you can play music. As shown below:
Precautions:
1, if the U disk to play, it is recommended to use USB 5V power