Jabra Evolve 40 UC Stereo Noise Cancelling Headset Jabra Evolve 40 is a professional headset designed to help you focus and improve your conversations. The noise-cancelling microphone eliminates background noise and reduces high-frequency sounds. Get 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. Works straight out of the box. Installation is as easy as simply plugging it in to the USB port on your laptop. The Jabra Evolve 40 has a 3.5mm jack which can also be used for smart devices. Built for style and comfort with soft leatherette ear cushions. Adjustable headband lets you find the perfect fit. Optimised for UC.