I. Main Functions 1. Dual decoding supports MP3/WMA/WAV/FLAC/APE lossless format music; 2. Support Bluetooth-compatible function, Bluetooth-compatible version 5.0; 3. Support call function; 4. With power amplifier 2*3W, connect two 3W speakers at the same time; 5. Digital color screen display; 6. Support MMC/SD/MMA and other cards, 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 (87.5MHZ-108.0MHZ); 11. Buttons: four-button multi-directional control, VOL-/AUTO/VOL+/MODE; II. Key Operation 1. VOL-: Short press to choose the previous song; long press to decrease the volume 2. PLAY/PAUSE: Short press is to switch between pause and play; long press is to radio FM automatic station 3. VOL+: Short press to choose the next song; long press to increase the volume 4. MODE: Switch of USB/TF/FM/LINE IN/Bluetooth-compatible sound 5. VOL-button (previous song/volume down): in MP3 state, VOL-short press is the previous song, long press is the volume down; in FM state, short press is up a channel number; in bluetooth-compatible under the function, a short press is the previous song on Bluetooth-compatible, and a long press is the volume down. 6. AUTO button (play/pause): in MP3 state, short press AUTO to play/pause; in FM state, short press to play/pause, short press to automatically close and save the station; short press to play in Bluetooth-compatible function /pause. 7. VOL+ button (next song/volume up): in MP3 state, short press VOL+ for the next song, long press to increase the volume; in FM state, short press to down a channel number; in the Bluetooth-compatible function Short press for the next bluetooth-compatible song, long press for volume down. 8. MODE button: switch between USB / TF / FM / audio input / Bluetooth-compatible function in turn. III. Description of Recording Function 1. Long press the MODE button to start recording, and long press the MODE button again to cancel the recording function; 2. Long press the PLAY/PAUSE button to play the recording file; 3. When recording, it is necessary to connect a storage device, such as: U disk or TF card; IV. Specifications Model: JQ-D032BT with call recording 12V power supply amplifier 2*3W USB: Connect U disk (maximum support 32GB) LED color screen: digital screen display, showing red Infrared receiver module TF: Connect TF memory card (maximum support 32GB) AUX: Audio input interface Main control IC: AC6926 Bluetooth-compatible IC: AC6926 Bluetooth-compatible version is version 5.0 Music format: MP3/WMA/WAV/FLAC/APE lossless format music Power: 2*3W, connect 2 3W speakers Radio FM frequency: 87.5107.5 MHZ Support function introduction: support MP3/USB/TF/LINE IN/FM/Bluetooth-compatible/remote control connection/DC 12V About the structure: Panel size: 107 * 25 MM, the two corners of the panel and the screw hole positions, then the cover cover the surface, the depth of the board is 32 MM includes: 1 * Decoder Board 1 * Remote Control (without battery) 1 * Set of Cables