Roland RH-200, Headphones, Closed-back, 180 Degrees swivel ear cups, 40 mm Driver, Neodymium magnet, ""Copper-Clad Aluminium Wire"" coils, Sound pressure level: 100 dB, Impedance: 65 Ohm, Frequency range: 20 - 20,000 Hz, 3 m Cable with strain relief, Stereo mini jack with 6.3 mm adapter, Weight with cable: 278 g, Weight without cable: 200 g