The BIZ 2300 Microsoft optimized headset is a durable headset that delivers HD voice/wideband speaker performance and noise cancellation. It features dual stereo speakers with a flexible and 360-degree adjustable noice-cancelling microphone and a 7.7ft. long USB cable allowing connection to PCs and desk phones. It features answer/end/reject call, volume, mute and hold buttons and weighs 90g. 2-year limited warranty. Black.