Sennheiser MKE 40 Lavalier Microphone with Lemo connector 3 pin
Sennheiser MKE 40-EW Lavalier Microphone - Professional Specifications. Frequency Response 40 - 20,000 Hz. Equivalent Noise Level 27 dB (A-weighted); 37 dB (CCIR). Rated Impedance Approx. SPL (1 kHz, THD=1%) 118 dB (up to 133 dB passive).