Speaker parameters

Sensitivity: 110 ± 3dB(1kHz under 178MV)
Speaker impedance: 32 ± 5 Ω (1kHz)
Frequency response: 100Hz - 10KHz
Distortion: ≤ 5% (1kHz under 178MV)
Ear-cap size: Ф30mm

Microphone parameters

Sensitivity: -57 ± 3dB (4.5v, 2.2kΩ, 1kHz)
Distortion: ≤ 5% (1kHz under 178MV)
Microphone size: Ф6 x 3.8mm