Impedance: 20ohm±15%
Sensitivity: 117dB±3dB
Frequency: 20-20000Hz
Mic dimension: 6.0 * 2.7mm
Mic sensitivity: -36dB +/- 1dB
Mic impedance: 2.2kohm
Directivity: Omni-directional
LED working voltage: DC5V +/- 5% 
Impedance: 20ohm±15%
Sensitivity: 117dB±3dB
Frequency: 20-20000Hz
Mic dimension: 6.0 * 2.7mm
Mic sensitivity: -36dB +/- 1dB
Mic impedance: 2.2kohm
Directivity: Omni-directional
LED working voltage: DC5V +/- 5%