The microphone's polar pattern is unidirectional, its frequency response is 20 Hz to 20 kHz, its core is φ. 16 mm, and its sensitivity is 34 dB ±2 dB (0 dB = 1V/Pa at 1 kHz). At 1kHz, the output impedance is 150 ΩΩ±30%30%. The equivalent noise level is 16 dBA. The load impedance is greater than 1000 Ω. Maximum SPL (at 1kHz ≤1% T.H.D.): 130 dB Cable Length: 1.8 M ±5 cm ● Working Voltage: DC1.5 V 10V ● Electrical Current: 3 mA ● S/N Ratio: 78 dB