The ATH-AD500X is designed to be extremely comfortable to use. With its feather-light honeycomb aluminum construction and magnesium frame structure, these open headphones do not put pressure on the ear, thus allowing completely natural and comfortable use. The self-adjusting wings automatically adjust to the size of the user's head. The straight cable on the left headphone is equipped with a 3.5 mm mini-jack connector and a 6.3 mm adapter. Remarkably natural sound with deep, resonant bass and excellent vocal projection Open headphones do not put pressure on the ear, allowing for a natural sensation Feather-light honeycomb aluminum construction and magnesium frame structure Large 53mm drivers with neodymium magnets and CCAW voice coils for an outstanding sound experience Self-aligning 3D Wing Support for even more enjoyable use Extremely comfortable, velvety ear cushions OFC (oxygen-free copper) cable Gold-plated stereo 3.5mm mini-jack connector with 6.3mm adapter.