The microphone shall be a subminiature electret-condenser microphone with cardioid polar pattern and a frequency response from 20 Hz up to 20 kHz. Windscreens as well as extensive mounting material shall be included. 

Output Level: -50.0 dB/Pa (3.1 mV)
Maximum Sound Pressure Level (at 1 kOhm load, 1% THD): 138 dB SPL
Diameter: 5.8 mm
Net Weight: 188 g