Polycom SoundStation 2 EX Expansion Microphones 

The Polycom Wireless Microphones accessory kit is an innovative solution for
adding additional microphone pickup to your conference room without the
hassles or limitations of cables.
Designed exclusively for the Polycom SoundStation2 EX, SoundStation IP
6000 and SoundStation VTX 1000 conference phones, each of the two
microphones included with the Polycom Wireless Microphones accessory
kit can be placed up to 30 feet from the phone console, extending the
microphone coverage even to hard-to-reach corners of the conference room.
Plus, the microphones fully support Polycom HD Voice™ on conference
phones that also support HD Voice technology for superb voice quality with
no compromises.
Rechargeable batteries support up to 12 hours of talk time, easily covering
a full day of conference calls. A convenient charging cradle holds both
wireless microphones for easy recharging, and two AC adapters are included
to individually charge both microphones simultaneously, even without the
cradle. The AC adapters can also be used to power the microphones during
conference calls. A convenient mute button that silences all microphones is
built into each wireless microphone unit, and LED indicators display whether
the call is active or muted, link status, and low battery.
Using Polycom Wireless Microphones helps you to clean up the conference
table by eliminating extra cables. There is no need to drill holes in the
conference table or worry about cable management. In addition, the Polycom
Wireless Microphones are ideal for rooms with unusual configurations or
U-shaped tables, as the microphones can be placed anywhere additional
voice pickup is needed without worrying about where to route the cables.