Power: 2 * 80W/Bluetooth call function/recording function/dual decoding MP3, WMA, WAV, FLAC, APE lossless format music/read USB drive/read TF card/external audio input LINE IN/infrared remote control/power-off memory/12V voltage (range 6V-24V)/current above 2A Shell size: 130mm in length and 49mm in width; Depth: 63MM ⑴ Main functions: 1. Dual decoding supports lossless formats of music such as MP3, WMA, WAV, FLAC, and APE; 2. Power amplifier 2 * 80W, capable of connecting two 80W speakers simultaneously; 3. Voltage range 6V-24V, current not less than 2A; 4. Supports Bluetooth calling function, Bluetooth version 5.0; 5. Support recording function; 6. Supporting microphone function 7. Digital color screen display; 8. Supports MMC/SD/MMA and other cards, and supports USB interface (USB flash drive); 9. Power off memory function; 10. Support infrared remote control operation at a distance of 10 meters; 11. Support external audio input LINE IN; 12. Button: Four buttons for multi-directional control of VOL -/AUTO/VOL+/MODE; ⑵ Detailed button operation 1. PREV button (previous track): In MP3 mode, VOL - short press for previous track, long press for volume reduction; Short press in FM mode to move up one station number; Short press under Bluetooth function to play the previous song on Bluetooth; 2. AUTO button (play/pause): Short press AUTO in MP3 mode to play/pause; Short press to play/pause in FM mode, long press to automatically receive and coexist channels; Short press to play/pause under Bluetooth function. 3. NEXT button (next track): In MP3 mode, short press VOL+for next track, long press for volume increase; Short press in FM mode to downgrade one station number; Short press under Bluetooth function to switch to Bluetooth next track; 4. MODE button: Switch between USB/TF card/audio input/Bluetooth function in s