The Jabra Evolve 40 Professional Headset is built for greater productivity and amazing sound quality for calls and music. To block out distraction, this telework headset contains passive noise cancellation and has a special busylight that automatically turns red when you pick up a call to let others know to not disturb you. It can also be manually turned on so you can stay focused and undisturbed when needed. The on-the-ear design along with the leather-feel cushions provide all-day comfort so you can find inspiration between calls and enjoy your music without worry. If you're heading out of the office, easily transfer your Skype for business and Lync PC calls to your smartphone and continue using the microphone headset while on the go. Plus, the 3.5mm jack lets you easily connect to personal devices, so you can work or listen to music wherever you are.