Features: 1. Bluetooth-compatible Lossless Sound Quality: Dual decoding support MP3 / WMA / WAV / FLAC / APE lossless format music; support Bluetooth-compatible function and recording call function, Bluetooth-compatible version 5.0. 2. Strong Power Supply And Color Screen Display: Amplifier 2 * 40W, while you can connect two 40W speakers; 12V power supply (voltage range 7V-18V); color digital screen display; support USB interface (U disk). 3. Multi-functional Design: Power-off memory function; support for 10-meter distance infrared remote control operation; support for external audio input LINE IN and radio FM, retrieval frequency band (87.5MHZ-108.0MHZ). 4. Convenient Key Operation: Four keys multi-directional control, VOL- / SCAN / VOL + / MODE. MODE: USB / TF / FM / AUX / BLUETOOTH-compatible sound switching; SCAN: short press is to pause and play the switch; radio state short press the automatic search station; USB: connect U disk (maximum support 32GB); TF: connect TF memory card (maximum support 32GB) AUX: audio input interface; VOL-: short press is to select the previous song; long press is to reduce the volume; VOL +: short press is to select the next song; long press is to increase the volume. 5.After-sale Service: If you have any questions, please contact us immediately and we will help you solve it as soon as possible. Stereo output power: 2*40W(VDD=23V,RL=8ohm) 2*30W(VDD=16V,RL=4ohm) 2*20W(VDD=12V,RL=4 ohm) Bass output power: 80W(VDD=23V,RL=4ohm) 64W (VDD=21V,RL=4ohm) 47W (VDD=18V,RL=4 ohm) Specifications: 1. Bluetooth-compatible version 5.0 2. Support call (long press the pause button to answer the call when it comes). 3. Support recording. Recording only supports TF mode or USB mode operation.(Long press MODE button to start recording, long press MODE button again to cancel recording and play the recording file; long press pause button to exit the recording mode. When recording, you need to connect a storage device, such as: U disk or TF card;) 4. Support power failure memory 5. Power supply voltage support between DC 8v-24v, current between 1-4A. 6. Can be directly connected to the speaker 7. Support song format MP3 / WMA / WAV / APE / FLAC 8. Main functions MP3 / USB / TF / LINE IN / FM / Bluetooth-compatible/ remote control 9. Stereo 2 * 40W + woofer power 80W 10. Support folder selection playback. When the USB or TF playback device has a folder and there are songs in the folder, press the up button or down button 2 times to select the folder to play songs, the screen will display F001-F00? If there is a folder, F00 will be displayed. Key Function Description: "PREV/VOL-" long press volume down; in USB/TF/Bluetooth-compatible/radio mode short press for previous song/previous radio station "PLAY/PAU" short press in USB/TF/Bluetooth-compatible mode for play/pause; long press for mode switch "NEXT/VOL+" long press for volume up; short press in USB/TF/Bluetooth-compatible/Radio mode for next song/next radio station "MODE" for mode switching, a total of 5 modes (Bluetooth-compatible-TF-USB-FM-AUX).