Logitech Expansion Mics
Extend the range of the video conferencing system with Logitech Expansion Mics.
Logitech Expansion Mics

Group expansion mics
Add-on mics for larger groups
Extends the audio range of Logitech Group video and audio conferencing from 8.5 meters. This is the expansion microphones only, does not include Logitech Group HD Video and Audio Conferencing System for Big Meeting Rooms
Easily Mute Calls
Easily mute the entire speakerphone system from the far end of the table, and also got a mute indicator light to lets everyone know when the mics are muted