Item Type: Spring Audio Cable Weight: Approx. 70g/ 2.5oz Wire Material: Oxygen-Free Copper Wire Core Material: Bare Copper Wire Size: Length: Approx. 1.4m/ 4.6ft Stretching Length: Approx. 3m/ 9.8ft Product Plug: 3.5mm Stereo Plug Shipping with 6.35mm Conversion Plug Fitment: for ATH-M50X M40X headphoneand the playback audio source with 3.5mm national standard Interface, can be compatible with mainstream equipment in the market. Package List 1 x Audio Cable 1 x Conversion Plug 1OFC wire core can read data quickly and transmit the highfidelity sound to your devices. 21.4m wire length, the stretching length is about 3m, shipping with 6.35mm conversion plug, more convenient to use. 3Wire core is made by OFC copper, which has excellent electrical conductivity, bright surface, high corrosion resistance and longer service life. 4Twisted pair can reduce the impact of current noise, and can realize high resolution sound with the feeling of a presence. 5Effectively improve the resolution and separation of the headphone, so that the sound can be more transparent and natural. 6Fit for ATHM50X M40X headphone, meet your different needs.