Nature design, absolutely sing to ring !

Sensitivity: 〈OdB=lv/Pa. IKHZ〉
Directivity: Undirectional Noise-cancelling
lmpedance: Low impedance
Current Consumption: Max. 0. 5mA
Standard Operation Voltage: 1. 5V
Sensitivity Reduction: Within±3dB at lv
S/N Ratio: More than 36dB