Tactical Mic / Earpiece / Nexus Connector Kit - NATO Wired, No PTT Ada – Comm Gear Supply
Kenwood 2-Pin Compatible Microphone (3.5mm Earpiece Connector) - Radiotronics USA
DBT-K | Basic D Shape Earpiece with Boom Mic | Wildtalk
Universal Agent M1 2 PIN PTT Earpiece Headset MIC for
Amazon.com: Retevis Adjustable Throat Mic Earpiece for Cell Phones, Earpiece with Mic 1 Pin 3.5mm, Covert Acoustic Tube Earpiece with PTT Back Clip(1 Pack) : Electronics
Motorola 56518 Headset with Boom Microphone for business radios is a great earpiece. Free delivery of this Moto earset.
Amazon.com: Motorola 56517 Earpiece with Inline Push-to-Talk Microphone : Electronics
Motorola AAL82X501 Receive-Only Earpiece For Speaker Mic | Amerizon
Amazon.com: Ambar Wireless Bluetooth Earpiece for Calling with Built-in Mic, Compatible with iPhone, Android, Headset for Cell Phones for Driving/Office/Business : Cell Phones & Accessories