Polycom SoundStation IP 7000 Extension Microphones (2200-40040-001)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Set of 2 microphones</li><li>Expansion Microphones for SoundStation IP7000</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41eYC3rqI%2BL.jpg" noproxy>