Speaker Parameters

• Sensitivity: 110 ± 3dB(1kHz under 178MV)
• Speaker impedance: 150% ± 15% Ω (1kHz)
• Frequency response: 100Hz - 10KHz
• Distortion: 3% (1kHz under 178MV)
• Ear-cap size: Ф30mm 

Microphone Parameters

• Sensitivity: -57 ± 2dB (2v, 2.2kΩ, 1kHz)
• Distortion: 5% (1kHz under 178MV)
• Microphone size: Ф6 x 2.7mm