Amazon.com : Plantronics Poly Polycom Expansion Mic for RealPresence Debut (2200-69631-001), Black : Office Products
Polycom Expansion (EX) microphone for SoundStation VTX1000 2201-07155-605 Refurbished
Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom