AC-404USB-Powered MicrophonePart of the ProCon series, the AC-404 USB is a high quality capsule microphone that dramatically improves voice quality on conference calls. Ideal for people who rely on free or subscription internet conferencing services such as Skype, the AC-404 conference mic uses boundary microphone technology and built-in custom circuitry to produce smooth, quiet, and professional sounding conferences, no matter where you are.• High-quality USB boundary mic for Web conferencing• Excellent for offices and conference rooms• Standard jack for headphones or speakers• 180-degree coverage for great sound over a wide range• Compatible with any computer (Mac or PC)