Specifications: 1) Dimensions: 9.7 x 6.7mm 2) Sensitivity: -32dB ~ 46dB, Vs=4.5V, RL=2.2kΩ 3) Frequency range: 20-200,000Hz 4) Directivity: omnidirectional 5) Impedance: ≤2.2kΩ 6) Current consumption: max. 500μA 7) Standard operation voltage: 4.5V 8) Max. operation voltage: 10V 9) Sensitivity reduction: within -3dB at 1.5V 10) S/N ratio: >60dB We have other types: 1) EM-9750P 2) EM-6022P 3) EM-6027P 4) EM-6050P 5) EM-9465P