Get a natural sound experience with the Sennheiser Office Headset SC 660 and enjoy lasting quality. Because the microphone has Ultra-Noise canceling, background noise is filtered out. This means that you always remain clear to the other and you can follow the conversation well at the same time, even in a busy environment. The headset has aluminum parts. This makes the SC 660 light weight (110 grams). In addition, the Kevlar cable ensures sustainable quality. The Sennheiser Office Headset SC 660 is a stereo headset with the Quick Disconnect connection option.