Uni-directional headset microphone

Azden Uni-Directional Headset Microphone High quality uni-directional vocal headset which has a gooseneck-adjustable mic and adjustable rear head-band for a more comfortable fit. Comes with a wired 3,5mm mini-jack connector. This electret condenser microphone requires a bias voltage of 1-11VDC which all Azden bodypack transmitters provide. Super light-weight and unobtrusive, behind the head design combines comfort and functionality. Works great with 15BT, 35BT and PRO Series transmitters. Specifications Mic Element: Electret Condenser Freq Response: 30-18,000 Hz Polar Pattern: Uni-directional Sensitivity: -48dB @ 1kHz (0dB-1V/Pa) Impedance: 680 ohms @ 1kHz Voltage required: 1-11VDC