Shure SRH240, Headphones, Closed, Circumaural, Dynamic, Neodymium magnet, Nominal impedance: 38 Ohm, Max. input level: 500 mW, Frequency range: 20 / 20,000 Hz, Acoustic pressure: 107 dBV, Two-sided cable connection, 2 m Cable with 3.5 mm jack, Weight with cable: 255 g, Weight without cable: 235 g, Incl. screw-on jack adapter