Koss CS 100

Koss CS 100 ... ideal for telephony, voice-activated and voice recognition software and computer games with sound cards with built-in bias supply. But it can also be used with an external power source if sound card does not have a built-in bias supply.

CS100's Clear Voice Technology noise cancellation microphone delivers clear communication in noisy environments. Other features include dynamic element for extended frequency response, foam ear cushions for open, hear-through sound, adjustable headband for best fit and straight, single entry cord.