Logitech 989-000171 Group Expansion Microphones for Video and Audio Conferencing

Flexibility: Extend the range of the Group video conferencing system with Logitech Group Expansion Mics
Clear Audio: Accommodate up to 20 people in one large room and make sure everyone’s voice can be heard
Easy Connexion: Simply plug the microphones into the Group speakerphone-they are automatically recognized and configured