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 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