Full-featured audio/video conferencing package for large spaces: Affordably packaged HD video camera, speakerphone, and expansion microphones Designed to accommodate up to 20 people: A 90-degree field of view and an extended 28-foot audio range are perfect for large group conferences. Commercial-grade expansion microphones and speakerphones: Everyone seated around the conference table can hear and be heard clearly thanks to plug-and-play HD audio. Simple video conference: Using a plug-and-play USB connection to a laptop and your preferred video conferencing software, start video conferences. incredibly sharp video: HD 1080p footage featuring digital pan, tilt, and zoom, autofocus, and premium Zeiss-certified optics