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  • Limited warranty
    • 2 years
    • PC via USB
    • Windows ® or Mac ® OS
    • Frequent users of PC audio, conference calls, webinars, video conferencing, collaboration
    • Dynamic EQ, microphone frequency response 100 Hzâ 8kHz optimal for wideband voice telephony (up to 6,800 Hz), hi-fi stereo output from 20 Hz-20 kHz (C620 only), enhanced digital signal processing (DSP), noise-canceling microphone
    • SoundGuard®: Acoustic limiting for protection against sounds above 118 dBa
    • C610 (monaural); C620 (stereo): UC Standard version built for UC applications and softphones from Avaya®, Cisco®, IBM®, Skype® and more* C610-M (monaural); C620-M (stereo): Version optimized for Microsoft® Lync â ¢ 2010 and Microsoft® OCS 2007