High Performance for Speech Applications. The key component in producing very high-quality audio signal is the microphone. The VXi TalkPro XPress USB uses a voice band optimized, noise canceling electret specifically designed for speech applications for higher word accuracy levels. This high-performance, noise canceling microphone blocks background noise Flexible gooseneck boom that stays in position for consistent voice input. It"s concave ear cushion provides exceptional comfort and improved sound Digital signal processing (DSP) heightens audio performance. System Requirements: Windows 7, Vista, XP, 200, Me, 98SE, Mac OS X 9.1 or greater, Mac OS X 10 or greater, Two Year Manufacturers Warranty