About this item Replacement Audio upgrade HIFI Cable for HD4.40 / HD4.50 / HD4.30i / HD4.30G / HD400S Headphones Length: 3.94 x 1.18 x 0.39 inches, package includes: 1*replacement cable (no headphone included) Cable Diameter: 4mm, cable material: the inside cable is OFC wire, the outside cable is Braided Tangle-Free cable Jack: 3.5mm Male & 6.35mm adapter to 2.5mm Male (comes with the lock the same as the original cable) The 2.5mm end on this cable is only compatible with HD4.40 / HD4.40 bt / HD4.50 / HD 4.50 btnc / HD4.30i / HD4.30G / HD400S Headphones Dimensions: 3.94 x 1.18 x 0.39 inches