The Blackwire 700 Series is the versatile UC headset that offers high-quality PC audio and seamless Bluetooth connectivity to mobile phones and tablets. Enjoy unmatched audio quality, industry-first Smart Sensor technology that automatically answers a call when you put on the headset, and a detachable cable for taking your mobile calls throughout the office. The Blackwire 700 Series headsets connect to your PC and mobile phone - combining the comfort and durability of corded with the freedom and flexibility of wireless. Ideal for knowledge workers who need a seamless solution for managing calls on their PC, mobile phone or tablet, the Blackwire 700 Series is the most integrated, premium headset for UC. Experience industry-first Smart Sensor technology that lets you answer a call by simply putting on the headset, or pause mobile device media playback by taking it off - making it the most productive and versatile corded headset on the market.