<p><strong>Size: 68mm (length) x 58mm (width) x 21.8mm (height)</strong></p><p><br/></p><p><strong>Bluetooth solution: 5.3 EDR, A2DP, HSP, AVRCP</strong></p><p><br/></p><p><strong>Frequency: 2.4GHz -2.48GHz</strong></p><p><br/></p><p><strong>Power supply voltage: DC 5V (without built-in battery)</strong></p><p><br/></p><p><strong>Bluetooth reception function: connect 1 phone</strong></p><p><br/></p><p><strong>Support TF card and USB flash drive playback</strong></p><p><br/></p><p><strong>Shipping list: Host, 3.5mm audio cable, TYPE-C power cable, instruction manual</strong></p><p><br/></p><p></p>