Professional Lapel microphone 

High class back electret condenser microphone 

For vocal, speech, dance and sport applications, for instrumental artists and solo entertainers 

With windscreen 

Element: Omni-directional Back Electret Condenser

Directional Characteristics: Noise Canceling

Frequency Response: 100 Hz ~ 10,000 Hz

Sensitivity: -66 dB +/- 4dB

Impedance: 600 ohm

Operating Voltage: 1.0V- 10V D.C.

Connector: 3.5mm Lock Screw

Cord Long: 1.5m

Connector: safely Screw Lock  1/8" (3.5 mm) inside plus configuration for Sennheiser pocket transmitter 

(Compatible With Sennheiser EW100  SK100 EK100 G1 G2 G3 , EW300 SK300 EK300 G1 G2 G3 , EW500 SK500 EK500 EK2000  G1 G2 G3  ... ... Wireless)