Superlux HD-681AIR - dynamic studio headphones; circumaural; semi-open; air ear pads; sound pressure level 98 dB; impedance 32 Ohms; frequency response 10-30,000 Hz; power consumption 300 mW; THD 100 mW@1KHZ<1%; cable length 2.5 m; 3.5 mm stereo jack; self-adjusting headband for good wearing comfort; weight: 320 g; incl. carrying bag, adapter to 6.3 mm stereo jack, air ear pads