Product Feature: 1: Small and exquisite in size 2: Color screen display 3: With bluetooth function 4: Bluetooth version 5.0 5: Support 10+ meters distance Bluetooth playback and transmission Product description: Function introduction: 1. Support radio/USB/TF/MP3/AUX 2. Support LED digital tube display/color screen fluctuation display 3. U disk/TF card supports memory within 32G 4. Support power-off memory playback function and breakpoint memory playback 5. Support 10+ meters distance Bluetooth playback and transmission, support Bluetooth function, Bluetooth version 5.0 6. Support external audio source input LINE IN 7. Buttons: Four-button multi-directional control, VOL-/SCAN/VOL+/MODE 8. Accessories: remote control *1pcs (with battery), 2P power cable *1pcs, 4P cable (audio antenna) *1pcs 9. Can support lossless formats such as MP3/WMA/WAV Product parameters: 1. Power supply: 9V 12V 2. Audio output 530mA 3. SNR70dB 4. Frequency response: 80Hz~15KHz 5. Distortion0.2 6. Separation 45dB 7. Storage temperature: -20 degrees Celsius 8. Radio frequency range: 87.5~108MHz 9. FM automatic search sensitivity: 25~30dB 10. Product power consumption150mA Key Description: 1.VOL-: Short press the previous song in the USB/SD state; short press the previous radio station in the FM state, and long press the volume to decrease. 2. SCAN: short press play/pause in USB/SD state, long press in FM state to automatically scan radio stations; 3.VOL+: short press a song in USB/SD state; short press a radio station in FM state, long press volume up; 4.MODE: When there is SD card and U disk: the switching sequence is USBSDBLUEFMAUXUSB; when there is only U disk: the switching sequence is USBBLUEFMAUXUSB; when only SD card: The switching sequence is SDBLUEFMAUXSD. Question answer Q: How to call out the Bluetooth mode and how to connect A: Press the MODE button, after several times, BLUE will appear on the display screen, then use the mobile phone to search for Bluetooth, and you can connect after searching for BT-SPEAKER. Q: How is the red audio ground wire connected A: That one is the external antenna of the radio. If you want to receive more radio stations, you can connect an external wire of about one meter! Q: Does it support in-vehicle Answer: Yes, please use 12V voltage when installed in the car. If there is a current sound when installed in the car, please supply power separately. Q: Is the Bluetooth connection good A: The bluetooth link is convenient, and the sound is also good! It can be received in the range of 10 meters. Q: Can it be used on motorcycles Answer: Yes, but it is useless to directly connect the speakers of the power amplifier board to it. Q: What should I do if there is noise installed on the power amplifier Answer: The board cannot use the same power supply as the power amplifier, it must be powered separately. Q: How to distinguish between positive and negative electrodes Answer: GND is the negative pole, and the one marked with voltage is the positive pole. Q: Is the high and low sound obvious A: There is a remote control, which can be adjusted Q: Do you have breakpoint memory Answer: Yes. Package list: 1* Decoder board 1* remote control 3* Cable