WIFI:NoDSP:AC 6921 DAC:- Body Material:plastic Bluetooth:Yes Supports EBook Reading:No Operation Mode:Touch Tone Storage Type:Flash Memory Have Speakers or not:Yes Supports FM:Yes Battery Specification:External Power Signal Noise Ratio:89dB Supports Recording Function:Yes Display Size:None Package:No Function:Voice Recorder,FM Radio,bluetooth,Build in Speaker Model Number:LCD Bluetooth 5.0 MP3 Decoder Board Style:Pure Audio MP3 Battery Life:> 20 hours Screen:Yes Balanced Out:No External Memory:Yes Audio Format Support:MP3, WAV,FLAC,ape,WMA Origin:Mainland China Certification:CE battery:not include power supply:DC 12V Feature 1:Support folder playback Feature 2:Support call Feature 3:Support power off memory Feature 4:LCD screen display Feature 5:Folder switching function Feature 6:Support song format MP3 /WMA / WAV / APE / FLAC Feature 7:Bluetooth 5.0 Feature 8:Support Recording Model: JQ-D008BT with call and recording function 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: 87.5107.5 MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control connection / DC 12V About the structure: Panel size: length 112 * width 62MM, the panel is surrounded by screw holes, the depth of the panel is 22MM 1. 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. 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: Long press 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 TF 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; long press is to radio FM automatic station; 14. MODE: Switch between USB / TF / FM / AUX / BLUETOOTH; Audio Amplifier