Complete audio/video conferencing bundle for big rooms: HD video camera, speakerphone and expansion mics in one affordable package Optimized for up to 20 participants: Extended 28 ft. audio range and 90-degree field of view for large group conferences Business grade speakerphone and expansion mics: Plug-and-play HD audio allows everyone around the conference table to clearly hear and be heard Easy video conferencing: Launch video meetings with a plug-and-play USB connection to a laptop and your video conferencing program of choice Razor sharp video: HD 1080p video with autofocus, digital pan/tilt/zoom and premium Zeiss-certified optics