the throat mike in question is a LGR-32:
Technical Specifications:
Speaker
Output level: 102 +/-3dB
Impedance: 32 ohm +/- 15%
Frequency range: 450-20,000Hz
Audio Output: 30mW
Microphone
Type: Omnidirectional condenser
Sensitivity: -65dB +/-2dB
Frequency response: 20-16,000Hz...