AKG K-175 , Studio Headphones, Drivers: 40 mm, Supra-aural, Closed-back, Frequency response: 18 - 26,000 Hz, Impedance: 32 Ohm, Sensitivity: 114 db SPL/V, SPL (sound pressure level): 104 dB/V, Foldable, Single-cable configuration, Detachable 5 m coiled cable, Weight: 250 g, Incl. bag