STAY FOCUSEDThe Jabra EVOLVE 40 MS Mono is a professional headset designed to improve concentration and conversations. Premium noise-canceling technology gives you peace to work in the noisy, open office effectively creating a concentration zone around you, so you can stay focused on the job. The speakers are built for style and comfort with leatherette ear cushions, and are specifically designed to reduce office noise. The concentration zone is completed with a busy-light indicator that signals user availability to colleagues.