<ul><li>Wireless Version : 5.0</li><li>Earbuds dimensions : 19 x 39 x 22mm&nbsp; 2</li><li>Net Weight: 4.0g x 2&nbsp;</li><li>Wireless Working Range: 10M&nbsp;</li><li>Speaker: 12mm</li><li>Speaker frequency : 100Hz ~ 10KHz</li><li>Input Voltage / current : 5v DC / 1A</li><li>Play Time: 3.5 hours&nbsp;</li><li>Talk Time: 3.5 hours</li><li>Carging Case Battery : 400mAh</li></ul>