Mini Lavalier Microphone for Shure sm11 Wireless Clip Unidirectional 4 Pins xlr
ta4f 4 pins xlr connector and windscreen 
Compatible with Shure Body Pack Transmitter Model: SLX PGX, BLX, ETC...

Specification
Type: Condenser
Cartridge Diameter:φ6mm                       
Polar Pattern:Unidirectional
Sensitivity: 20mv/Pa(-32dB±2dB)               
Frequency Response: 60~20000Hz      
Output Impedance:≤2.2KΩ
Power:2.0V-10V.DC                        
S/N:≥88dB                                      
Cable:1.2M

Package includes:
1 x Lapel mic with windscreen