Description - Extension Microphone for SoundStation2 Expandable</br>Special Features/Suggested Use - Twice the microphone sensitivity/loudness of the original</br></br>Product Description</br></br>Polycom develops?? manufactures and markets a full range of high-quality?? easy-to-use and affordable voice and video communication endpoints?? video management software?? web conferencing software?? multi-network gateways?? and multipoint conferencing and network access solutions. Includes 2 microphones.</br><br/>http://www.amazon.com/gp/product/B0006ZP31K