GROUP is ideal for mid- to large-size video conferences. If you have a larger room or larger groups, the optional expansion mics will extend the audio range to 8.5m. HD 1080p video quality at 30 frames-per-second. Full-duplex speakerphone with life-like sound that's crisp, clear, and highly intelligible. 90-degree field of view, mechanical 260-degree pan and 130-degree tilt.