The jabra evolve 20 is designed to give you better conversations with a world class microphone and speakers that are optimised for voice stay focused the jabra evolve 20 uc mono is a professional headset specifically designed to improve conversations its state of the art noise cancelling microphone eliminates noise so you can hear more and be better focused on the conversation stay flexible the jabra evolve 20 uc mono comes with a control unit that supports comfortable and easy access to