Size (mm): 6*5mm 7*9mm 6*2.2mm
Connection: Solder 2 pin
Sensitivity range (0dB=1V/Pa, 1kHz) (dB): -32dB - 46dB 
Operation voltage (V DC): 4.5 
External resistor (Kohm): 1.0/2.2 
Impedance: low impedance 
Current consumption: max. 500uA 
Sensitivity reduction: within -3dB at 1.5V 
S/N ratio: more than 60dB