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 Stay connected: External sound controller allows for making, taking and muting calls – Connect to your PC via USB or use the 3.5 mm jack for use with your personal device This Evolve 30 UC headset is optimised for all major unified communication platforms and built for style and comfort with soft foam ear cushions – Adjustable headband lets you find the perfect 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 30 UC stereo on-ear headset, USB cable with control unit – Weight: 171g – Colour: black Product comes with 2-year warranty