Beyerdynamic DT-108/M200/H400-G, one ear-headset, headphone: dynamic, closed, circumaural, impedance 400 Ohms, pressure level 94dB, frequency range 30-20.000 Hz, weight 283g, microphone: dynamic, polar pattern hypercardioid, impedance 200 Ohms, frequency range 40-12.000 Hz, colour grey, attention: cable is not included, please order optional !