Behringer HPX2000, DJ Headphones, Half open back design, Foldable and rotatable round auricles, Robust headband construction, High wearing comfort, Wide dynamic range, Frequency response: 20 Hz to 20,000 Hz, Max. Power consumption: 100 mW, Impedance: 64 ohms, Sensitivity: 110 dB @ 1 kHz, Cable length: 2.0 m, Connection: 3.5 mm stereo connector, Includes 6.3 mm jack adapter