EPOS Sennheiser SC 665 USB (1000645) - Double-Sided Business Headset | UC Optimized and Skype for Business Certified | For Mobile Phone, Tablet, Softphone, and PC (Black) - Newegg.com
Sennheiser DW 30 HS Dual Ear Wireless Office Headset with Base (Dock) DW BS - US | eBay
Sennheiser SC 135 USB (508316) - Single-Sided (Monaural) Headset for Business Professionals | with HD Stereo Sound, Noise-Canceling Microphone, & USB Connector (Black) - Walmart.com
OfficeRunner Wireless Headset from Sennheiser | Headsets.com
EPOS Sennheiser D 30 D30 Phone Wireless Headset 1000989
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Sennheiser Enterprise Solution SD Pro2 ML Double-Sided Multi Connectivity Wireless Headset for Desk Phone & Skype for Business Ultra Noise-Cancelling Microphone, Black - Walmart.com