Dan Clark Audio AEON 2 Open-Back, Headphones, Open design, Circumaural, Planar magnetic drivers, Impedance: 13 Ohm, Sensitivity: 92 dB/mW, Headband is made out of metal and leather, Weight without cable: 327 g, Includes a case and a 1.8 m dual-entry cable (3.5 mm/6.3 mm)