Voice Recorder Function 2x20W 7.4V Wireless Wired Microphone Trolley Speaker Sound Bt Decoder Amplifier Board

User Manual: Plastic panel details: Panel size: 205x80mm (bracket design) Specification: Function Description: Support wireless Bluetooth TWS function, wired microphone, wireless microphone, microphone recording, lossless decoding format music, read USB disk, read TF card, radio FM, amplifier 2x20W, input line in, infrared remote control, power failure memory, power supply 7.4V battery, DC 5V Andriod USB charging socket on front panel. Main Features: 1, dual decoding, support MP3/WMA/WAV/APE/FLAC format music; 2, support Bluetooth TWS wireless function; 3, digital tube display; 4, support USB/TF card; 5, Power failure memory function; 6,Support 5-10 meters distance infrared remote control operation; 7, support LINE-IN (AUX)/ LINE-OUT; 8, support FM (87.5MHZ-108.0MHZ); 9, Button: MIC/REC/VOL-/ TWS / VOL+ / MODE; 10, support power automatic protection system (positive and negative power reverse will not burn PCBA, just not work); 11, the highest volume 30 levels 50 levels; 12. Support pause / single song loop playback / replay all tracks. 13.Power amplifier 2x20W, DC 5V Andriod USB for 7.4V battery charging. 14.Support wired microphone and recording microphone; 15.Support treble, bass, echo, microphone; Button operation instructions: 1, MIC PRI button. inter Microphone working status. 2, REC button. Record microphone speech. 3, Vol- button: When USB/CARD/BT/FM status, short press "VOL-" to play the previous song/previous radio station, when USB/CARD status, long press to fast forward the song; when USB/CARD status, long press to fast forward the song; when USB/CARD status, long press to fast forward the song. When USB/CARD status, long press to fast forward the song; 4. Auto button (Pause/TWS): USB/CARD/AUX/BT state short press "Pause" is playing/pause; Under FM status, short press to automatically search for FM stations and memorize all stations; When using wireless BT function, long press for TWS function; 5, Volume + button: USB/CARD/BT/FM status, short press "VOL-" for the previous song/station. USB/CARD state when long press for fast back song; 6, MODE button: switch USB/CARD/FM/AUX/BT function in turn.