咪芯型號/Model：BT58

凈重/Net Weight: 37g

阻抗/ Lmpedance: 600 Ω ±30%（AT 1KHz）

指向性/Polar pattem:  Cardioid/心形

頻率響應/Frequency: 70Hz-13KHz

靈敏度/Sensitivity:-49dB(±3dB)(1dB=1V/Pa)