Feature:
1) Mic type: 9mm x 7mm
2) Impedance: Maximum2.2k??
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: 27mm

9) Sensitivity: 108dB S. P. L at 1kHz
10) Spk frequency response: 20Hz-20, 000Hz
11) Impedance: 32??
12) Rated power: 100mV
13) Power capability: 1000mV
14) Cord length: about 2.5m
15) Plug type: 3. Mm stereo