Professional headset with easy call management and great sound for calls and music. - Great sound for calls and music - Call control unit for managing calls - Plug-and-play connectivity - UC Version With great sound for calls and music, the Evolve 20 and 20 Special Edition are entry-level professional headsets with easy call management through a control unit that makes, takes and mutes calls. Simple connectivity makes it easy to get started with your PC with clearer conversation for greater efficiency. It is an entry-level professional headset with easy call management and great sound for calls and music. You can manage calls easily by getting easy access to the most used functions, like volume and mute. You can also answer and end calls quickly and easily, directly from the control unit with a flexible Plug and Play connectivity. It works straight out of the box and installation is as easy as simply plugging it into the USB port on your laptop. Features - Made for voice calls and music - Passive noise cancellation / Noise canceling microphone - Easy call management using control unit - Flexible UC Plug and Play connectivity - HD Voice, PeakStopTM technology - HiFi sound, remote call control/easy call management - Jabra software compatible - Crystal clear sound, on the ear wearing style, passive noise cancellation - UC Version