Stereo Condenser Microphone, Frequency Response 100 - 17,000 Hz, Open Circuit Sensitivity -50 dB (3.1 mV), Impedance 600 ohms, Max. Input Sound Level 119 dB SPL, On/Off Switch, Dynamic Range 82 dB, S/N Ratio 57 dB, Battery type 1.5 LR44/200 hour life, Weight 111g