The Plantronics? Blackwire C710-M (Microsoft? Lync version) headset combines reliability and flexibility unlike any other unified communications device. It?s sleek, smooth design houses breakthrough Smart Sensor? technology allowing you to answer a PC or mobile phone call by putting on the headset and then pause mobile device playback by taking it off. Whether corded or wireless, the C710-M has got the style and the brilliance to back it up.