Multimedia headset Model: AN-300 - HEADPHONE * FRGUENCY RANGE : 8 ~ 24,000Hz * IMPEDANCE : 32 OHM * SENSITIVITY : 104dB S.P.L. at 1KHZ * JACK : 3.5mm STEREO * MAXIMUM POWER INPUT : 1,000mW * LENGTH OF CORD : 3M - MICROPHONE * FRGUENCY RANGE : 20 ~22,000HZ * IMPEDANCE : 2.2KOHM * SENSITIVITY : -56 ?3dB * JACK : 3.5mm STEREO * OPERATION VOLTAGE : 2V ~ 10V * LENGTH OF CORD : 3M