Sanken COS-11 d PT-BK EW, Condenser Lavalier Microphone, With shielding against radio frequency interference by digital radio transmitters, Splashproof, Polar pattern: Omnidirectional, Frequency range: 50 - 20.000 Hz, Sensitivity: 8.9mV/Pa (-41dB,0dB=1V/Pa), Peak SPL: 127 dB, Impedance: 180 Ohm, Sennheiser EW plug, Dimensions: 16.1 x 4 mm, Cable length: 1.8 metres, Colour: Black, Includes RM-11 rubber mount, HC-11 crocodile clip and WS-11 wind basket