<p>Turn on:turn the lever clockwise. Shut down:turn the lever counterclockwise to return.</p> <p>Audio source:Bluetooth\/TF card\/FM\/AUX; Audio source switching:Click the M key to cycle through</p> <p>Previous song:Double click the knob; Next song:Click the knob</p> <p>Increase or decrease volume:Turn the knob</p> <p>Switch the ambient light:click the light button and use the essence to drip on the plastic tray (pick up the plastic tray and drip the essential oil to prevent the essential oil from contaminating other parts of the product)</p> <p>Product model:Round-X19</p> <p>Chip model: AC6965A</p> <p>Bluetooth version:V5.3</p> <p>Support protocol:BR++BLE</p> <p>Audio decoding:MP3, WMA, WAV</p> <p>Transmit power:+6dBm</p> <p>Communication distance:10M</p> <p>Working frequency band:2.4GHz</p> <p>Master-slave switching:supported</p> <p>Charging voltage:5V</p> <p>Charging time:about 2.0 hours</p> <p>Battery model specifications:18650, 3.7V, 1500mAh</p> <p>Music play time:7-8 hours</p> <p>Charging interface:TYPE-C 2</p> <p>Speaker parameters:</p> <p>Speaker impedance:4ohm</p> <p>Sensitivity:87dB\/W\/M</p> <p>Rated output power:5W</p> <p>Rated input power:5W</p> <p>Speaker size\uFFE040mm</p> <p>Product net weight:485g</p> <p>Colour:B:Pink</p> <p>Material:ABS</p> <p>Size:180x130x71mm</p> <p>Package Contents:</p> <p>1 * aromatherapy Bluetooth speaker</p> <p>1 * data cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>