Jabra Evolve 40 UC Professional Wired Headset, Mono ? Telephone Headset for Greater Productivity, Superior Sound for Calls and Music, 3.5mm Jack/USB Connection, All-Day Comfort Design, UC Optimized About this item PROFESSIONAL HEADSET ? The Jabra Evolve 40 pro headset is built for greater productivity and amazing sound quality for calls and music BE MORE PRODUCTIVE ? Stay in the zone and avoid interruptions thanks to the busylight that automatically turns on during a call to let others know to not disturb you. It can also be manually activated, so it?s a call center headset that keeps you focused FLEXIBLE CONNECTIVITY ? The 3.5mm jack lets you connect this Jabra headset to your personal device, such as a smartphone or tablet, so you can work or listen to music wherever you are. It also has a USB connector for even more flexibility. ALL-DAY COMFORT ? The on-the-ear headset design along with the leather-feel cushions provide all-day comfort. Plus, simply wearing them eliminates high-frequency noises, such as human voices, to help you stay comfortable and connected COMPATIBILITY ? This office headset works with all leading UC platforms. Certified for Skype for Business, Cisco, and more. It is also compatible with all of the most popular online voice call services.