PRIZOM Bluetooth 5.0 MP3 Player Decoder Board FM Radio TF USB 2X40W AUX Module Receiver JQ-D063BT Kit Audio Amplifier Board - 500367143

• + Button ( Song/Volume Increase): + 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. Under The Bluetooth Function, Short Press Is Song Of Bluetooth, And Long Press Is Reduced Volume. Double-Click To Cut Down A Folder. -Button (Previous Song/Volume Decrease): In Mp3 State, -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, Short Press Is The Previous Song Of Bluetooth, And Long Press Is Volume Reduction. Double-Click To Cut To A Folder. Scan Button (Play/Pause): In Mp3 State, Auto Short Press To Play/Pause. In The Fm State, Short Press Is Automatic Retracting And Storage Table, Long Press Has No Function. Short Press Under Bluetooth Function To Play/Pause. Mode Button: Switch Between Usb /Tf/Fm / Line In / Bluetooth Function. Long Press Is The Recording Function, Press The Button Again To Cancel The Recording Function And Play The Recording File. When Recording, It Is Necessary To Connect A Storage Device, Such As: U Disk Or Tf Card.