<h1><strong><span style="color:rgb(211, 49, 21)">Tips：</span></strong></h1><h3><span style="color:rgb(211, 49, 21)">There are 4 optional models and choose according to your needs</span></h3><h1><strong> Key and interface functions:</strong></h1><h3>1. PLAY/PAUSE: Short press to switch between PAUSE and PLAY; Long press is the FM automatic radio station;</h3><h3>2. PREV/VOL -: short press to select the previous song; Long press to decrease the volume; Double click to switch to the previous folder;</h3><h3>3. NEXT/VOL+: Short press to select the next song; Long press to increase the volume; Double click to switch to the next folder;</h3><h3>4. LED: digital screen display, red</h3><h3>5. REPEAT: Press once for single cycle, and press again to cancel single cycle</h3><h3>6. EQ: sound field mode, testing 6 kinds of sound quality; (Classical) (Jazz) (Rock) (Bass) (Popular) (Normal)</h3><h3>7. MODE: switching between USB/TF/FM/LINE IN/BLUETOOTH</h3><h3>8. AUX: audio input interface</h3><h3>9. IR: infrared receiving module</h3><h3>10. TF: Connect TF memory card (up to 32GB)</h3><h3>11. USB: USB flash disk (up to 32GB)<br/></h3><h1><strong><span style="color:rgb(244, 78, 59)">2x40W big remote &amp; 2x40W small remote:</span></strong></h1><h3>Bluetooth version 5.0, power 2*40W</h3><h3>Recording microphone function</h3><h3>Music format: MP3/WMA/WAV/FLAC/APE lossless music format</h3><h3>Radio FM frequency: 87.5—108 MHZ</h3><h3>Folder switching function</h3><h3>Function: support MP3/USB/TF/LINEIN/FM/Bluetooth/remote control /DC 12V (voltage range 7V-25V, current not less than 2A)</h3><h3>About structure: Panel size: length 75 * width 50 MM, screw holes around the panel, and the depth of the panel is 23 mm.</h3><p></p><h1><span style="color:rgb(244, 78, 59)"><strong>Without Amplifier:</strong></span></h1><h3>Bluetooth version 5.0</h3><h3>Recording microphone function</h3><h3>Music format: MP3/WMA/WAV/FLAC/APE lossless music format</h3><h3>Radio FM frequency: 87.5—108 MHZ</h3><h3>Folder switching function</h3><h3>Function: support MP3/USB/TF/LINEIN/FM/Bluetooth/remote control /DC 12V</h3><h3>About structure: Panel size: length 75 * width 50 MM, screw holes around the panel, and the depth of the panel is 23 mm.</h3><p></p><h1><span style="color:rgb(244, 78, 59)"><strong>2x3W with 6.5mm mic jack:</strong></span></h1><h3>Bluetooth version 5.0</h3><h3>Power supply voltage: 3.7V-5V and current not less than 2A.</h3><h3>Power: 2* 3W, and two 3W speakers can be connected at the same time.</h3><h3>Connect the microphone function,</h3><h3>Support power-off memory</h3><h3>Music format: MP3/WMA/WAV/APE/FLAC lossless music format.</h3><h3>Radio FM frequency: 87.5—107.5mhz.</h3><h3>Introduction of support function: Support MP3/USB/TF/LINE IN/FM/Bluetooth/remote control/DC 5V.</h3><h3>About structure: panel size: 90 * 32 MM</h3><p><br/></p>