3.0*1.5mm Solder joints All point to the microphone Copper shell copper core material Electret capacitanc
| Dimensions : 3.0*1.5 mm | 
| Sensitivity : -46±3dB | 
| Frequency range : 50-20 KHz | 
| Directivity : All that | 
| Impedance :Low impedance | 
| Current consumerption :Maximum 500 uA | 
| Standard operation voltage :3V | 
| Operation voltage range :1.5-10V | 
| S/N ratio :Greater than 58 dB | 
| Sensitivity reduction :Voltage change 1.5V Sensitivity changes less than 3dB | 
