?<strong>Features:</strong><br /><br />A 7.1 Surround game headphone， remarkable active noise reduction function， it can effectively isolate noise.<br /><br />USB headphone is equipped with a cool honeycomb-type indicator， and it is convenient to control microphone and volume.<br /><br />Soft earmuffs and adjustable hinges for comfortable wearing.<br /><br />High quality and fashionable appearance.<br /><br />Ideal for internet chat， VOIP (voice-over-IP)， computer， gaming， etc.<br /><br /><br /><br /><strong>Note:</strong><br /><br />A CD driver for 7.1 surround effect. Please connect the earphone (usb port) with computer before you install the driver; for next time use， please plug into the same usb port. If you want to plug into other USB port， driver need reinstalling.<br /><br /><br /><br /><strong>Specifications:</strong><br /><br />Color: Black&nbsp;&nbsp; &nbsp;<br /><br />Microphone specification:<br /><br />Microphone dimension: 6(diameter) * 5mm<br /><br />Directivity: Unidirectional&nbsp;&nbsp; &nbsp;<br /><br />Impedance: 2.2 kohm<br /><br />Sensitivity: -38dB&plusmn;3dB&nbsp;&nbsp; &nbsp;<br /><br />Speaker specification:<br /><br />Driver diameter: 40mm&nbsp;&nbsp; &nbsp;<br /><br />Impedance: 32 ohm<br /><br />Frequency response: 15Hz ~ 25kHz&nbsp;&nbsp; &nbsp;<br /><br />Sensitivity (S.P.L): 98dB&plusmn;3dB&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;<br /><br />Plug: USB<br /><br />Cord length: Approx. 2.8m / 9.2ft<br /><br />Item weight: Approx. 301g / 10.6oz<br /><br />Package size: 24.5 * 22.5 * 9cm / 9.6 * 8.9 * 3.5in<br /><br />Package weight: Approx. 493g / 1.1Lbs<br /><br /><br /><br /><strong>Package list:</strong><br /><br />1 * Headphone<br /><br />1 * CD