Key Features Expansion Microphones: Extends the audio range of Logitech Group video and audio conferencing from 20 ft. to 28 ft. This is the expansion microphones only, does not include Logitech Group HD Video and Audio Conferencing System for Big Meeting Rooms Expand Voice Pickup Diameter to 28 ft Allows for Larger Rooms and Groups Mute Button LED Status Indicator Plug-and-Play Installation Clear sound for larger groups and meeting rooms 8 ft. microphone cables 2 Years Limited Warranty
