EPOS I SENNHEISER IMPACT SC 638 ED - COM International Company
EPOS / Sennheiser IMPACT SC 632 1000556
EPOS I SENNHEISER 01 - Fixation kit for headset, call control unit - for IMPACT SC 630, 632, 638, 660, 662, 668; Sennheiser Century SC 630, SC 660 - Walmart.com
Replacement Ear Pads Cover Compatible with Sennheiser SC 600 630, 632 638 660 662 665 USB CTRL, SC 665 USB ML Telephone Headset|Earphone Accessories| - AliExpress
IMPACT SC 638 Outstanding sound for perfect speech clarity
Amazon.com: Sennheiser SC 665 USB (507257) - Double-Sided Business Headset | UC Optimized and Skype for Business Certified | For Mobile Phone, Tablet, Softphone, and PC (Black) : Everything Else
IMPACT SC 638 Outstanding sound for perfect speech clarity