PLEASE SEE DATASHEET AT https://www.jlielectronics.com/content/JLI-2555BXZ3-GP.pdf 

Type: Electret 

Pattern: Uni 

Dimensions (mm): 26.0 x 7.0 

Sensitivity (dB): -42 +/-3dB 

Sensitivity Reduction (dB): -3dB @ 1.5V 

Frequency Response (Hz): 50-20k 

S/N Ratio (dB): >65 

Impedance (ohms): 2.2k 

Current (milliamps): 0.5mA 

Standard Voltage (Volts): 1.5 

Maximum Voltage (Volts): 10 

Capacitors: None 

Termination: Solder Tabs