Sanken COS-11D PT-BE EW, Condenser Lavalier Microphone, With radio frequency interference shielding by digital radio transmitters, Splashproof, Polar pattern: Omnidirectional, Frequency range: 50 - 20,000 Hz, Sensitivity: 17.8 mV / Pa (-35 dB, 0 dB = 1 V / Pa), Peak SPL: 127 dB, Impedance: 180 Ohm, Sennheiser EW plug, Dimensions (L x Ø): 16.1 x 4 mm, Cable length: 1.8 m, Colour: Beige, Includes Rubber Mount RM-11, alligator clip HC-11 and windscreen WS-11