AKG HSD-240 professional headset - semi-open, over-ear design, frequency range 15 - 25000Hz, 91dB sensitivity, 55 Ohms rated impedance, max. input power 200 mW, dynamic mic (60Hz-17.000 Hz), hypercardioid, flexible microphone arm with automatic mute function, incl. wind screen W44 and velour ear-pads, Weight: 240g, attention: cable is not included, please order optional.