Four-mic noise cancelling - Cutting edge noise cancelling technology eliminates background noise, so your voice always sounds clear. Four-mic array and our adaptive Digital Signal Processors (DSP) work together to cancel disruptive background noise like traffic or crowds. Take the call anywhere - Six layers of our unique WindSmart technology detect wind direction and respond accordingly so your voice comes through clearly – especially outdoors. High-quality audio - Supports HD Voice over wideband networks and devices to enhance speech quality, so your caller clearly hears and understands you. Smart sensor technology - Smart sensors know when the headset is on or off; calls can be easily answered by simply putting on the headset; pause music for incoming calls, or mute a call by taking the headset off. Manage your calls using voice commands - Announces the names of incoming callers and waits for you to say "Answer" or "Ignore", allowing you to manage your calls using voice commands.