Enhance your conference calls with this pack of two POLYCOM Expansion Microphones (2200-16155-001) designed for use with the SoundStation2 audio conferencing system. These high-quality microphones ensure superior audio quality and clarity during your meetings, making it easier for everyone to hear and participate in the discussion. Perfect for business and industrial use, these expansion microphones are compatible with a range of telecom systems and are a great investment for any office looking to improve their conference call experience. With features like HD video and a sleek design, these microphones are a must-have for any conference room.