Fangrui Product Details Model: Jq-d008bt. Main Control Ic: Ac 6921. Bluetooth Ic: Ac 6921 Bluetooth Version Is 5.0 Music Format: Mp3/wma/wav/flac/ape Lossless Format Bluetooth Calling Function. Recording Function. Folder Switching Function. Radio Fm Frequency: 87.5-107.5 Mhz Support Function Introduction: Support Mp3 / Usb / Tf / Line In / Fm / Bluetooth / Remote Control Connection / Dc 12v About The Structure: Panel Size: Length 112 X Width 62mm, The Panel Is Surrounded By Screw Holes, The Depth Of The Panel Is 22mm Button And Interface Function 1. Prev: Twist To The Left To Select The Previous Song;next: Twist Right To Select Song; 2. Ir: Infrared Receiving Module; 3, Mic: Support Call And Recording Functions; 4. Usb Interface: Connect U Disk (maximum Support 32gb); 5. Lcd Screen: Synchronous Display Of Lyrics; 6. Sd Card Slot: Connect Sd Memory Card (maximum Support 32gb); 7. Aux Interface: Audio Input Interface; 8. Volume Knob: Control The Volume; 9. Rec: And Hold The Rec Button To Start Recording, The Rec Button Again To