Description Logitech GROUP Expansion Microphones (989-000171) Set of 2 Extend the range of the GROUP video conferencing system with Logitech GROUP Expansion Mics. Accommodate up to 20 people in one large room and make sure everyone’s voice can be heard. Simply plug the microphones into the GROUP speakerphone—they are automatically recognized and configured. An indicator light shows when the microphone is muted, when a call is active, and when Bluetooth® wireless pairing has begun. Features: Expand Voice Pickup Diameter to 28 ft Allows for Larger Rooms and Groups Mute Button LED Status Indicator Plug-and-Play Installation Buy with confidence! The VideoConference Store is an Authorized Logitech Reseller and has been delighting our customers for over 18 years. As a video and voice conferencing expert, The VideoConference Store can design and deliver a solution that integrates with your existing investments, aligns with your business requirements, and fits within your budget. Please chat below, email or call 1-888-821-7767 with any questions!