Features professional HD video with superior speakerphone audio for simple, small-group conferencing 78-degree field of view and 180-degree remote-controlled video pan, tilt, zoom ensure whole group visibility All-in-one design combines HD video with high-quality audio clarity The built-in, full duplex speakerphone and noise-cancelling microphone. Allows all meeting members to hear and be heard clearly up to 8 feet away from the base.Frequency response: 200Hz – 8KHz Omni-directional mic pickup and echo cancellation audio. Makes it seem like conversations are happening in the same room. Remote control and base button control options. Quickly control camera pan, tilt and zoom and volume up/down, mute and answer/hang-up functions during call. Broad application compatibility. Optimized for Microsoft Lync and Skype and works with most other popular UC platforms (49)