I. Main features 1. Decoding supports MP3, WMA, WAV, FLAC, APE lossless format music; 2. LCD screen display, lyrics display synchronously; 3. Support Bluetooth-compatible call function, Bluetooth version 5.0; 4. Support recording function; 5. Support TF interface; 6. Support USB interface (U disk); 7. Power-off memory function; 8. Support infrared remote control operation at a distance of 10 meters; 9. Support external audio source input LINE IN; 10. Support radio FM, search frequency band; 11. Buttons: six-button multi-directional control, REC / REPEAT / VOL- / AUTO / VOL+ / MODE; II.Specifications: 1. Bluetooth-compatible version 5.0 2. Support calling (long press the pause button to answer the call when there is a call). 3. Support recording. Recording only supports operation in TF mode or USB mode. (Long press the MODE button to start recording, long press the MODE button again to cancel the recording and play the recorded file; quit the recording mode and long press the pause button to quit. When recording, you need to connect a storage device, such as a U disk or TF card;) 4. Support power-off memory 5. The power supply voltage supports between DC 5v-12v, and the working current is between 1-3A. A single USB discharge supports a maximum current of 2A, and the size of the current is determined by the input voltage and data line to determine the last output data. 6. Support song formats MP3/WAV/APE/FLAC 7. Main functions MP3/USB/TF/LINE IN/FM/Bluetooth-compatible/remote control 8. Support folder selection to play. includes: 1 * Decoder 1 * Remote Control (without battery) 4 * Cables