Earphone
*The drive unit: 10 Φ mm
*Impedance: 32ohm (plus or minus 15%)
*Loudspeakers 116dB + 3dB sensitivity:
*The microphone sensitivity: - 58dB + 2dB
*Frequency response range: 8Hz - 200000Hz
*Insert needle: 3.5 Φ mm
*Line length: 135 m