72-160-0 Electret Microphone Omni-directional electret cartridge.
Impedance: same as load resistor (RL)
Sensitivity: -69db (Vcc=4.5V RL=1KW)
Freq. response: 50Hz ~ 13KHz
Input voltage: .5V ~ 10V (Typ. 4.5V)
Current: .6mA maximum
S/N ratio: over 40db