Cuttingedge noise cancelling: Four microphones and a proprietary DSP work together to cancel disruptive background noise such as traffic or crowds. Exclusive WindSmart technology: Six layers detect wind direction and respond accordingly so your voice comes through clearly, especially outdoors. HD Voice clarity: Supports HD Voice over wideband networks and devices to enhance speech quality, so your caller clearly hears and understands you. Allday comfort: Rigorously tested for stability and comfort on a wide range of ear shapes, so it feels as comfortable on your last call of the day as it did on the first. Use scenarios: In a busy office or open workspace, enjoy clearer calls with reduced background noise from colleagues, equipment, and chatter. Outdoors or in windy environments during commute or travel, where WindSmart helps keep your voice clear even with wind noise. On remote calls or conference calls across various devices and networks, delivering improved speech quality and easier intelligibility for participants.