Usb Mono Headset with unidirectional noise canceling mic: The noise canceling microphone is designed for reliable testing, speech, and other vocal use, in less than ideal environments. In line volume and mute control: conveniently located inline volume and mute control makes it easy to adjust what your are listening to on the fly. Usb plug-n-play: designed to work with standard USB ports, perfect for newer and older computers and laptops.