Wheat core: 26mm diameter

Sensitivity: -42±2db (1.5V, 680Ω)

Output impedance: 680Ω65% (0db=1V/Pa dl1Khz)

Signal noise≥66db

Directivity: Cardioid

Frequency response: 20hz-20khz

Maximum sound pressure level: 125db (at 1khz≤1％T.H.D)

Equivalent noise level: 16dbA

Product size: 17*3cm