AKG HSD 171 Studio Set, Headset with MK HS Studio D Cable, Closed, Aural, Dynamic handset, Transmission range: 18 - 26,000 Hz, Sound pressure: 94 dB, Nominal impedance: 55 Ohms, Nominal load capacity: 200 mW, Microphone: Dynamic, Hypercardiod, Transmission range: 60 - 17,000 Hz, Weight: 255g, Colour: Matte black, Swiveling microphone boom, Includes MK HS Studio D cable, Cable: Length 3m, 6-Pin mini XLR plug to 6.3 mm stereo jack and 3-pin XLR plug