The Jabra EVOLVE 40 UC mono is a professional headset designed mainly to improve conversations. Premium noise-cancelling microphone eliminates background noise so your voice can be heard more clearly. USB adapter with a 3. 5 mm jack incorporated into the control unit allows you to easily connect your headset to your PC, smartphone and tablet. Busy light signals user availability. Microphone boom-arm can be integrated into the headband when not on a call or simply listening to music. Built for style and comfort with leatherette ear cushions. Stay in the zone and avoid interruptions Integrated busylight notifies colleagues to avoid interruptions Find inspiration between calls Enjoy your music with amazing sound throughout the day Flexible connectivity Connect using USB or jack All-day comfort Leather-feel ear cushions, and on-the-ear design for all-day use Works with all leading UC platforms Certified for Skype for Business, Cisco, and more