Description: Smart Sensor technology for a seamless and intuitive user experience. USB connectivity for PC calling; works with leading softphones from Microsoft, Cisco, Avaya, Skype and more. Precision-tuned triple mic with enhanced DSP for superior noise cancelling. Stream music, podcasts and GPS with A2DP. Enhanced voice alerts announce remaining talk time, connection status, battery level and mute. Use your voice to answer incoming calls and for a host of other commands.