About this item Replacement audio upgrade cable with Twist-to-Lock connector design compatible with HD598, HD598 SE, HD518, HD598 Cs, HD598 SR, HD599, HD569, HD579 headphones. Connector: 3.5mm Male & 6.35mm adapter to 2.5mm Male, the 2.5mm end jack features a Twist-to-Lock connector design similar to the original cable, while the 3.5mm jack fits phones with thicker cases. Length: 2.5 meters (8.3 ft), package includes: 1 replacement cable (headphones are not included). Cable diameter: 4mm, cable material: the inside cable is OFC wire, and the outside cable is braided tangle-free cable. This cable is compatible with HD558, HD518, HD598, HD598 SE, HD598 Cs, HD598 SR, HD599, HD569, HD579 headphones. Dimensions: 5.12 x 3.9 x 0.63 inches.