Musical Instrument & Vocal Microphones
Sennheiser MKE2-4 Gold-C
Sennheiser MKE2-4 Gold-C, Condenser lavalier microphone, Polar pattern: Omnidirectional, Frequency range: 20 - 20,000 Hz, Max. SPL: 142 dB, Impedance: 1000 Ohm, Sensitivity: 5 mV/Pa +- 3 dB, 3-Pin Lemo connecter for the 3000 and 5000 series...
https://www.bizrate.co.uk/musicalinstrument_vocalmicrophones/sennheiser-mke2-4-gold-c-oid343910157.html