ExpertPower 2-wire Surveillance Earpiece PTT Mic for Motorola AXU4100 BC10 CP88 DTR410 GP200 HT850 KM150A MU11C P040 RDU2020 SP10 TC-320 Brand New Excellent Audio Quality, Rugged Construction. Flexible and durable high grade Kevlar cable for demanding applications. Mini PTT Mic with a metal clip. Can be attached covertly to an undergarment or used overtly. Excellent for use in police, military, nightclubs, bars, paintball, security,restaurants, hotels, bouncer, warehouses, and noisy environments.