Featires：

•  Input voltage: 3.7~5V
•   U disk/TF Card format: FAT16/32
•  Music format: MP3/WAV/APE/FLAC
•   LED Indicator: Blue LED on in BT mode, Blue LED blink in music mode
•  3.5mm Audio stereo output
•   Size: 41x45mm

Buttons：

• MODE: Short press to switch working modes, TF mode, U disk mode and BT mode
• P/P: Short press to PLAY or PAUSE
• NEXT/V+: Short press to play next song, long press to increase volume
• PREV/V-: Short press to play the previous song, long press to decrease the volume
• RPT: Single / Cycle switching

How to use：

1. Working Mode

When there is no U disk or TF card inserted in the decoder board, the default mode is BT mode, otherwise the default mode is MUSIC mode, and the mode can be switched by the MODE button.

2. Music Mode

Insert the U disk or TF card to play the stored audio files.

3. BT Mode

When switch to BT mode, the board will broadcast "The bluetooth device is ready to pair", this mean the board enter the BT mode and wait for pairing. Use your mobile phone to search for "XY_BT", click connect, the board prompts "The bluetooth device is connected successfully", indicating that the decoder board is connected to the mobile phone Success, you can play music now.