Plantronics Blackwire 5220 C5220 Binaural USB-C & USB-A. Plantronics Blackwire 5220 C5220 Stereo USB-C/A & 3.5mm Headset Microsoft Skype Certified P/N 207586-03. Plantronics Blackwire 5220 USB-C/A (binaural) headset has both USB-C/A and 3.5 mm smartphone connectors allows this headset to be used to many different type of devices such as Apple iPhone and PC.
eBay