Av-jefes Tcm141-sh4 Black Color Condenser Lavalier Mic for Shure Wireless Microphone System Compatible with Shure Body-Pack Transmitter Models: T1, ULX1, UR1, PG1, PGX1, PGXD1, SLX1, BLX1, BLXD1. (Not Compatible with Mipro, Peavey, Beyer wireless microphone system) Pattern: Omnidirectional RoHs and REACH Complied. Without Pb, Hg, Cd, Cr6+, PBB, PBDE. Impedance: 1000 Ohm +/- 30% Package Include: TCM141 lapel (1), Tie-Clip (1), EZ-15-MM Windscreen; (1)