Wide Application: Bluetooth Mp3 Decoder Board Can Easily Improve The Sound Quality Of Ordinary Audio, Widely Used In Toys, Gifts, Fitness Equipment, Household Appliances, Broadcasting Systems, Etc. 12v Bluetooth Mp3 Decoding Board Can Directly Switch The Signal, And Insert Support Usb, Tf Card. Bluetooth 5.0 (Wireless Music Games Can Be Realized After Linkage With Mobile Phones) Can Use Usb/Tf/Bluetooth/Fm/Line Switches And Mp3/Wma, Wav Lossless Music Decoding Chips. Repeat: Press The Single Loop Function, Press Again To Cancel The Single Loop, And Sequentially; EQ: Sound Field Mode, Test 6 Sound Quality; (Classical) (Jazz) (Rock) (Bass) () (Normal) Mode Button: Switch Between Usb/Tf/Fm/Audio Input/Bluetooth Function; Long Press To Start Recording, Press The Button Again To Cancel The Recording Function And Play The Recording File; Internal Recording Only (Only Audio Input, Radio Fm, Bluetooth); When Recording, It Is Necessary To Connect A Storage Device, Such As: U Disk Or Tf Card; Type: Mp3 Decoder Board Model: JQ- Function: Bluetooth Decoder Key Operation Detail 1. Pause: Short Press Is The Switch Between Pause And Play; Long Press Is A Radio Fm Automatic Station; 2. Vol-Button: Short Press To Select The Previous Song; Long Press Is The Volume Down, Double Click To Switch To The Previous Folder; 3. Short Press To Select Song; Long Press Is The Volume Increase, Double Click To Switch To Folder; 4. Repeat: Press The Single Loop Function, Press Again To Cancel The Single Loop, And Sequentially; 5. Eq: Sound Field Mode, Test 6 Sound Quality; (Classical) (Jazz) (Rock) (Bass) () (Normal) 6. Mode Button: Switch Between Usb/Tf/Fm/Audio Input/Bluetooth Function; Long Press To Start Recording, Press The Button Again To Cancel The Recording Function And PlayThe Recording File; Internal Recording Only (Only Audio Input, Radio Fm, Bluetooth); When Recording, It Is Necessary To Conn