The Jabra Evolve 80 is a professional headset that eliminates noise and helps you focus. Built to eliminate noise. Active noise cancellation filters out low-frequency background noise. Specially designed ear cushions block high-frequency sounds. Noise-cancelling microphone makes sure that the other party can hear you loud and clear. When you are on a call, Jabra EVOLVE™ automatically turns on the busy light, letting people clearly know you are busy. When you are not on a call, you can also activate the red busy light to create your own concentration zone and keep you from being disturbed.