Product Description: Specification: Bluetooth version: 5.0 Power: 2*40W Power supply: DC 12V (voltage range 7V-25V, current not less than 2A) Music format: MP3/WMA/WAV/FLAC/APE lossless format music Radio FM frequency: 87.5—108 MHZ Support function introduction: Bluetooth calling function recording function Folder switching function Support MP3/USB/SD/LINE IN/FM/BLUETOOTH/remote control 1. Description of recording function 1. Long press the MODE button to start recording, long press the MODE button again to cancel the recording function and play the recorded file; 2. When recording, it is necessary to connect a storage device, such as a U disk or TF card; Under the storage device, such as a U disk or TF card, long press the PLAY/PAUSE button (play/pause) to enter the recording folder and play the recording file; 2. Button and interface function 1. PREV: Twist to the left to select the previous song; NEXT: Twist right to select the next song; 2. IR: infrared receiving module; 3, MIC: support call and recording functions; 4. USB interface: connect U disk (maximum support 32GB); 5. LED: digital screen display; 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: Press and hold the REC button to start recording, press the REC button again to cancel the recording function and play the recorded file; when recording, you need to connect a storage device, such as a U disk or SD card; 10. REPEAT: Press the single loop function once, press it again to cancel the single loop, and play it in sequence; 11. FD-: The short key is to switch to the previous folder, and the long press is to rewind; 12. FD+: Short key is to switch to the next folder, long press is fast forward; 13. PLAY/PAUSE: Short press is to switch between pause and play; the long press is to radio the FM automatic station; 14. MODE: Switch between USB / SD / FM / AUX / BLUETOOTH; Package includes: 1x Bluetooth 5.0 MP3 decoder board 1x remote control 1x Cable Set