Generic Replacement Earset Headset Microphone for Shure BLX1 Wireless Bodypack Transmitter, Omnidirectional Condenser, Mini 4 Pins xlr Ta4f Connector, Beige Color Compatible Transmitter Models (TA4F 4 pin Jack) - BLX1, BLXR1, GLX1, GLXD1, PG1, PGX1, SLX1, ULX1, L1, L11, LX1, SC1, U1, UC1, UT1, T1 Specification Capsule:Condenser microphone capsule Mic diameter: Φ3.0*1.5 mm Polar pattern: Omnidirectional Sensitivity:-45dB±2dB Frequency Range: 20-20KHz Output Impedance: ≤2.2kΩ Standard Operation Voltage: 2.0V-10V.DC SNR: >63dB Wire: 1.2m Package include: 1 x headset mic with windscreen