Calisto 825 connects to PC and mobile phone. Includes PA50 wireless mic.

Communication across devices has never been more simple with the Calisto 800 Series multi-device speakerphone system

Superior Call Management

• Connects and seamlessly switches between calls from
  PC, mobile and home* phone
• A 2.4" color display and a touch sensitive dial pad for
  easy caller ID viewing, dialing, answering, switching,
  and muting across devices
• Full call control with Microsoft Office Communicator
  and Lync 2010
• For privacy, use with Bluetooth® or corded headsets/
  headphones (3.5mm)

Uncompromising Audio Quality

• Premium, rich-sounding full duplex speakerphone
• Wideband audio coupled with advanced noise
  cancellation technology

Freedom of Movement

• Wireless microphone offers unparalleled voice
  transmission and freedom of movement
• Remote answer/end/mute control
• Enables 360-degree small group conferencing when
  placed flat on a table

All credits and info was found on plantronics.com