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Wherever and whenever the need arises to conduct hands-free, high quality PC-based calls and web conferencing, the compact and portable Calisto 420 USB speakerphone caters to spontaneous collaboration. Advanced wideband PC audio, combined with a powerful 360-degree omni-directional microphone, reduces echo and drop-outs, greatly improving both voice and audio quality. The clarity of full-duplex audio makes communication more productive for everyone on the call. The Calisto 420 easily connects to a PC via a standard USB cable and a convenient headphone jack accommodates private calls.