Sennheiser Stereo in-ear phones (55 in. cable, 90° plug) - Box of 50, EP01-140 | Affinitech Inc.
Amazon.com: Sennheiser SD PRO2 - Deskphone Cordless Headset with NEC EHS Adapter - Compatible Phones: Digital NEC Phones DT3xx and DT4xx, IP Phones DT7xx and DT8xx* (i-SIP/N-SIP) : Office Products
Sennheiser - CX 2.00I - 506092 Earphones - Black - Apple iOS | eBay