Passive noise cancellation for ideal concentration: Keeps high-frequency noise such as human voices out for better work collaboration and listening experience in any environment Easy call management: External sound controller allows for making, taking and muting calls – Stay connected and available at all times This Evolve 20 SE headset is Microsoft Certified and built for style and comfort with soft leatherette ear cushions – Adjustable headband lets you find the right fit Plug-and-play setup: The headset works out of the box with all leading systems – Installation is as easy as simply plugging it in Scope of delivery: Jabra Evolve 20 SE MC Stereo on-ear headset, USB-C/A cable with control unit, Colour: black