yi<br><br><br><span style="font-size: 18pt;">Condition: New Case</span><br><span style="font-size: 18pt;">Material: Plastic<br>USB-powered mode,<br>Nominal impedance 4,<br>Rated power of 2.5W,<br>Maximum power of 3W.<br><br><img align="middle" src="http://gd1.alicdn.com/imgextra/i1/1933230406/TB26ctTcVXXXXXEXXXXXXXXXXXX_!!1933230406.jpg"><img align="middle" src="http://gd3.alicdn.com/imgextra/i3/1933230406/TB2V_hVcVXXXXXEXXXXXXXXXXXX_!!1933230406.jpg"><img align="middle" src="http://gd2.alicdn.com/imgextra/i2/1933230406/TB2jf4WcVXXXXXmXXXXXXXXXXXX_!!1933230406.jpg"><br><br></span>