Shure Ear Hook Microphone 4 Pin XLR for Wireless Radio Body Pack Transmitter
Shure models - PGX1, SC1, SLX1, U1, ULX1, UR1, UR1M, UT1, SL1, SL11, LX1, SC1, U1, UC1, UT1, T1, ULX1, UR1, PGX. The microphone boom is fully adjustable when worn and inter-changeable to wear on left or right cheek.