ClearOne Chat 150 Dual Speakerphone is a Group USB speakerphone, powered by ClearOne’s market leading HDConference™ audio, enhances your web conferencing, unified communications and video conferencing experience in your personal workspace, huddle rooms, small and medium-size conference rooms with crystal-clear audio for business class performance. Chat 150 Dual has Distributed Echo Cancellation® and noise cancellation along with full-duplex performance and automatic level controls guarantee your conference calls to be natural with unmatched audio clarity free of any distractions. First-mic priority intelligently activates only the microphone closest to the person speaking, preventing the amplification of ambient noise and room reflections. Connect the CHAT 150 or the CHATAttach 150 to laptops & PCs via USB for handsfree audio. Daisy-chainable design can expand up to two complete speakerphones to cover medium-sized rooms. Full speakerphone expandability allows both mic and speaker to cover the entire room along with flexibility of control using any speakerphone.