Features:

1) Mic type: Ф9mm x 7mm
2) Impedance: maximum2.2kΩ
3) Sensitivity: -58dB ± 2dB (0dB=1V/pa)
4) Directivity: omnidirectional
5) S/N ratio: more than 60dB
6) Sensitivity reduction: within-3dB at 1.5V
7) Mic frequency range: 30Hz-16,000Hz
8) Speaker: Ф40mm
9) Sensitivity: 108dB S.P.L at 1kHz
10) Spk frequency response: 20Hz - 20,000Hz
11) Impedance: 32Ω
12) Rated power: 100mV
13) Power capability: 1000mV
14) Cord length: about 2.5m
15) Plug type:  3Ф.5mm stereo