Cobra Black Surveillance Wired Earbud and In-Ear Style Headset with Microphone (2-Pack)

Home Depot

Clear acoustic tube, Black in-line microphone/PTT, Surveillance-style design, Wired configuration

Valley 2-Wire Coil Earbud Audio Mic Surveillance Kit

Valley Enterprises

Clear acoustic tube, Coiled tube design, Black wiring, 2-wire configuration, Professional security aesthetic

2-Wire Surveillance Microphone Earpiece, Motorola APX at Sheepdog Microphones

Sheepdog

Clear acoustic tube, Coiled tube design, Black wiring, 2-wire configuration