SMART SENSOR TECHNOLOGY: Intuitively manages calls and audio so you can answer a call by simply placing the mono headset on your head.
blackwire
Plantronics – Blackwire 3210 – Wired, Single Ear (Monaural) Headset with Boom Mic – USB-A to connect to your PC and/or Mac
Intuitive Inline Controls For Call Answer/End, Mute, Volume /-