This Bluetooth headsets mobile and desk phone connectivity provides wireless freedom in the office or on-the-go. Smart Sensor technology gives you a seamless and intuitive user experience. Triple-mic AudioIQ3 DSP cancels noise and wind. Bluetooth connectivity gives you the freedom to roam up to 33 feet. Use your voice to answer incoming calls and for a host of other commands. Enhanced voice alerts tell you connection status, talk time remaining and more. Enjoy up to 7 hours talk time and 11 days standby. Add remote answer/end call capability for your desk phone with the Remote Handset Lifter or Electronic Hook Switch Cable (sold separately).