Culture Plus SC 70 USB CTRL BLACK delivers crisp, Sennheiser Voice Clarity and direct call handling in UC environments. The ideal headsets for office professionals who value comfort, style and exceptional sound. Designed to make call handling smoother and easier, Culture Plus headsets include an easy to use in-line call control unit, which puts a range of useful call management features at your fingertips. Now you can answer or end your calls, control the volume, mute your mic, redial and reject incoming calls - all directly from your headset.