This is the Sennheiser D 10 USB ML Skype for Business certified wireless headset. Design as a Plug-and-Play for Microsoft Skype for Business wireless headset. Sennheiser D10 USB ML wireless headset comes with 2 different wearing styles (ear hook and headband) for you to choose. Equipped with DECT spectrum wireless voice technology, noise-cancelling Microphone, Wireless roaming range up to 500ft. Fully charged battery has 12 hours of talk time. Very affordable high quality wireless headset with full 2-year warranty.
For more details, see Sennheiser D 10 USB ML Phone datasheet