Andrea Communications NC-181VM USB On-Ear Monaural Computer Headset with noise-canceling microphone, in-line volume/mute controls, and built-in external sound card and USB plug Connectivity Technology: Wired High Fidelity Monaural USB Computer Headset with Andrea's noise canceling microphone technology and Volume/Mute Controls. Pro-flex wire microphone boom for accurate microphone placement. Windsock for minimal breath popping. Stainless steel adjustable headband. Inline volume and mute controls. Reversible for left or right side usage. Folds flat for storage. Extra long 8 foot shielded cable.