Mic core: Dia. 16mm Frequency Response: 20 hz-20khz Maximum sound pressure level: 125dB Output Impedance: 680Î 65%(0dB=1V/Pa dl 1KHz) Equivalent Noise level : 16dB A Signal Noise:66dB A Electrical current: 3mA Microphone body weight : 220g Microphone body size:12*3.8cm