ClearOne 910-156-250 Chat 170 Personal/Group Speakerphone<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Full-Duplex audio performance allows users to listen and speak at the same time without audio cutting in and out</li><li>Distributed echo cancellation identifies and eliminates acoustic echo</li><li>Noise cancellation samples the ambient room noise and cancels it out for more natural sounding conversations</li><li>First microphone priority intelligently changes microphone levels depending on who is doing the talking</li><li>Automatic Gain and level controls adjust microphone and speaker levels automatically</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41BqHw7OcgL.jpg" noproxy>