?Contact Us When Any Question? -Yealink Warranty 30 days money back, 60 days free return, life time warranty. This Package including 1pcs headset , 1pcs USB cable, 1 pcs collecting bag, 1 pcs user manual, More than 2,000,000 users have a good conference experience with Yealink, Redefine Your Workspace. ?Campatible With All Pc System? - Authorized by Microsoft Teams and Zoom, so you can choose UC or Teams Version. Also certified for Skype, Whatsapp, and the other popular online voice call services. UH37 USB-A Compatible with Win8/Win10/XP,or MacOS operating system. ?Skin-friendly and Soft Headband & Ear Cushions?-UH37 weighs about 15% less than the previous USB headsets generation. UH37 wired Headset is well-built with a sturdy-feeling design made of high-grade plastic reinforced by a metal frame. The skin-friendly material, soft memory foam, combined with the ergonomic ear-fitting design, brings you a comfortable all-day experience. ?Phenomenal Audio for Call and Music?-The UH37 professional headset features professional-grade 35mm speakers, superb stereo sound, and dynamic EQ (Automatic switch between call mode and music mode), giving clear sound in call mode, high fidelity in music mode. You don't miss any details, focus on the tasks, and burst with fresh ideas whether you're meeting or listening to music during work. ?Dual Noise-Canceling Microphones?-With dual-microphones noise cancellation and Yealink Acoustic Shield technology, UH37 intelligently shields the noise and only picks up the speaker's voices. Even if in a crowded workplace, it can significantly reduce interference, allowing both sides of the call to enjoy pleasant communications.