Amazon.com: Factory Essentials HD251QD with U10 - Mono headset with USB-A Adapter. Comparable to Plantronics SupraPlus HW251 with DA45. Works with Phones and PC : Electronics
Plantronics HW251 Supra Plus Wideband Headset with Voice Tube Microphone
Plantronics SupraPlus HW251 Headset | 64336-31 - Headsets Direct