3.5mm Listen Only Acoustic Tube Police Headset Earpiece for Motorola Speaker Mic

Arrowmax ASK75C-S-35L FBI Style Clear Tube 3.5mm Receiver/Listen Only Earpiece Compatible with Motorola Kenwood Icom 2-Way Radio Speaker Microphone. The FBI Style Clear Tube earphone, with a 3.5mm plug and Kevlar-reinforced cables, provides durable, discreet communication.

eBay