This is a compact, lightweight headset with a noise canceling electret condenser, boom-mounted microphone. It's one of the answers to the rapidly increasing demand for affordable, trendy, and reliable headset microphones. It's intended used for vocal transmission applications requiring hands-free operation, maximum mobility, and high-quality voice pick up. 

Professional condenser microphone 
High class back electret condenser microphones 
For vocal, speech, dance and sport applications, for instrumental artists and solo entertainers 
With windscreen 

Element: 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.

Cord Long: 1m

Connector: safely Mini 3 Pin XLR configuration for Bodaypack transmitter (Compatible with AKG, Samson wireless system ... ...)