<p>Vol-Button (Previous Song\/Volume Decrease): In Mp3 State, Vol-Short Press Is The Previous Song, Long Press Is Volume Reduction; In The Fm State, Short Press To Adjust The Station Number Upwards; Under The Bluetooth Function, A Short Press Is A Bluetooth Previous Song, And A Long Press Is A Volume Reduction.</p> <p>Scan Button (Play\/Pause): In Mp3 State, Scan Short Press To Play\/Pause; In The Fm State, Short Press Is Play\/Pause, Short Press Is Automatic Closing And Saving Station; Short Press Under Bluetooth Function To Play\/Pause.</p> <p>Vol+ Button (Next Song\/Volume Increase): Vol+ Short Press Is Song In Mp3 State, And Long Press Is Volume Increase; In The Fm State, Short Press To Adjust The Station Number Down; In The Bluetooth Function, Short Press Is Song Of Bluetooth, And Long Press Is Reduced Volume.</p> <p>Mode Button: Switch Between Usb \/ Sd \/ Fm \/ Audio Input \/ Bluetooth Function. Long Press Is The Recording Function, And The Recording Audio Source Is Input To Line In. Radio Fm And Bluetooth.</p> <p>When Recording, You Need To Connect A Storage Device, Such As A Usb Flash Drive Or Tf Card</p> <p>Type: MP3 Decoder Board</p> <p>Model: JQ-D122BT</p> <p>Function: Bluetooth Decoder</p> <p>Colour:As Shown</p> <p>Material:ABS+FR4</p> <p>Size:11.2 x 2.5cm</p> <p>Package Contents:</p> <p>1 x Decoder Board</p> <p>1 x Remote Control</p> <p>1 x Cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>