*HEADPHONE SECTION SPEAKER DIMENSION:Ф15mm *IMPEDANCE:32Ω *SENSITIVITY:102dB S.P.L. at 1KHz *FREQUENCY RESPONSE : 20Hz-20,000Hz *RATED POWER:80mV POWER CAPABILITY:100mW * CABLE LENGTH:Approx.2.5m * PLUG TYPE : Ф3.5mm *Stereo PLUG TYPE:Ф3.5mm Stereo *MICROPHONE SECTION MICROPHONE UNIT:6?mm Dia.Electret condenser *MICROPHONE DIRECTIVITY:Omni Direction*SENSITIVITY:-58dB?dB * IMPEDANCE:Low *FREQUENCY RESPONSE:30Hz to 16,000Hz *STANDARD OPERATING VOLTAGE :3V