Directivity: Omnidirectional Impedance: Low impedance Current Consumption: Max, 0.5mA Standard Operation Voltage: 4.5V Sensitivity Reduction: Within -3dB at 1.5 V S/N: More than 60 dB Sensitivity Range: (0dB=1V/Pa 1KHz) -32+/-4dB -34+/-4dB -36+/-4dB -38+/-4dB -40+/-4dB -42+/-4dB -44+/-4dB -46+/-4dB Diameter: 9.7mm, Height: 6.7mm