Flexible connectivity using USB or jack. Manage calls easily with call control unit to make, take and mute calls. Plug-and-play connectivity for quick and easy set-up. Leather-feel ear cushions and around-the-ear design for all-day use. Certified Skype for Business for simple UC integration and plug-and-play straight out of the box Stay focused by eliminating distraction in noisy open office environments. Made for both music and voice with a world-class set of microphones and speakers. Let you, not the task, decide where you work by either PC based connection via USB control unit or to your smartphone or tablet with the 3.5mm jack. Each variant has passive noise cancellation as standard to give you protection against high frequency noise. Discreet boom arm easily tucks into the headband when not in use. Professional headset with easy call management and great sound for calls and musicEngineered for easy call management, the Evolve 20 is an entry-level corded headset for professionals w