Sennheiser PC 100 In-Ear Computer Headset / Earphones with Mic 2x 3.5mm 504124 | eBay
Sennheiser SC 230 USB CTRL II (506480) - Double-Sided Business Headset | For Unified Communications, Softphone, and PC | with HD Sound, Noise-Cancelling Microph… | Headphones with microphone, Sennheiser, Headphones