I. Main features 1.7V-22V power supply 2*30W stereo 2. Support folder selection and playback 3. Support call/support recording outside recording. Recording needs to be operated 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; in the recording mode, you need to connect a storage device U disk or TF card; 4. Support USB/TF/Bluetooth-compatible/Radio/AUX automatic switching 5. Support power failure memory function: memorize the song and volume before power failure 6. The product with power amplifier supports balanced output, and the stereo power is 2*25W. 7. Support MP3/WMA/WAV/APE/FLAC version of song decoding 8. SNR70dB 9. Radio frequency range: 87.5108MHz 10. Accessories: main unit*1pcs, 2P power cord*3pcs, 1P radio antenna*1pcs II. Key operation description 1. PREV/VOL- long press to decrease the volume; in USB/TF/Bluetooth-compatible/radio mode, short press to the previous song/previous radio station 2. PLAY/PAU in USB/TF/Bluetooth-compatible mode is short press to play/pause; long press is mode switch 3. NEXT/VOL long press to add volume; in USB/TF/Bluetooth-compatible/radio mode, short press for next song/next station 4. MODE is a mode switch, a total of 5 modes Bluetooth-compatible-TF-USB-FM-AUX III.Specifications: Model: JX-Y07 Bluetooth-compatible Version 5.0 Radio FM frequency: 87.5—108MHZ The power supply voltage supports between DC 7v-22v, and the current is between 1-3A. Can be directly connected to speakers Support song formats MP3/WMA/WAV/APE/FLAC Main function MP3/USB/TF/FM/Bluetooth-compatible/remote control/ Power 60W, stereo 2*30W Support folder selection for playback. When USB or TF is playing, there is a folder in the device and there are songs in the folder. Press the previous button or the next button twice to choose the folder to play songs, and the screen will display F001-F00?. And so on, there are ? folders F00？ is displayed. Output Power: 2*20W VDD14.5V, RL4 ohms 2*33W VDD22V, RL8 ohms Size: 92*41*14mm Weight: 40g Package List: 1 * Decoder 1 * Remote Control without battery 4 * Cables