Jabra Evolve 40 UC Mono USB Headset w/ Integrated Busy Indicator | Certified for Unified Communications, VoIP softphones, mobile phones and tablets | 6393-829-209
Jabra Evolve 40 Mono ENC010 NC Corded Headset USB With Carry Case Bag | eBay
Jabra Evolve 40 Mono USB Headset - Microsoft Certified (6393-823-109)