FREE 5-YEAR WARRANTY AND UNLIMITED SUPPORT – That’s 5 times the warranty of most competitor wireless headsets! The warranty covers the battery too, ensuring your Leitner will last. Warranty guaranteed by Leitner Headsets. Our live US-based support is ready for any questions, inquiries or fine-tuning of your wireless work headset. WORKS WITH MICROSOFT TEAMS & COMPATIBLE WITH TOP PHONE MODELS - The LH575 wireless headset is designed to work seamlessly with Microsoft Teams, Zoom, and other online meeting softwares, as well as all the leading phone models, including Polycom, Cisco, and Avaya. Perfect for remote work, online meetings, and your office or home office setup. ULTRA NOISE-CANCELING MICROPHONE – Filters out 90% of all background noise so your callers will hear you and only you. Noisy co-workers, crying babies, and loud lawnmowers are things of the past! Check out the sound demo in the videos section of our listing. LEITNER FOCUSLIGHT - Say goodbye to unwanted interruptions. The glowing LED ring makes it obvious when you’re on a call, whether you’re at your desk or grabbing a cup of coffee. OFFICE PHONE AND COMPUTER HEADSET – The LH570 offers Dual-Connectivity between desk phone and PC. Easily switch between the two with the press of a button. This is NOT a cell phone headset. Search Leitner LH670 for added cell phone use.