FEATURES:[ Type: Back Electret [ Pattern: Super Cardioid [ Frequency response (Hz): 50 -16000 [ Sensitivity (dBV/pa): -54 (2.0mv/pa) [ Rated Impedance (Ohm) 45: 200 [ Dimension (mm): Diameter 43x123 [ Weight (g): 185 [ Max.SPL (dB): 150dB (THD<=1%1000Hz) ";