Designed specifically for VoIP speech recognition and softphone applications where voice quality is of the utmost importanceFor use with professional-grade headsets (sold separately)In-line volume and mute controls for quick and easy call adjustmentsWideband audio for rich natural sounding conversationsEasy plug-and-play set-up no drivers to install no downtime or technical support neededSleek lightweight design for easy transport from office to homeCompatible with Plantronics and VXi P-series headsetsWorks with Windows and Mac operating systems2-year warranty