Audio Technica Solid Bass In-Ear Portable Headphones (ATH-CKS99) Newly developed Double Air Chamber System expands bass output for powerful bass without sacrificing audio clarity Exclusively designed 13 mm drivers create an entirely new rich audio experience 2 position post maximizes sound isolation while providing a better fit 3.9-ft. (1.2 m)) elastomer cord with L-shape plug Carrying pouch & XS/S/M/L ear tips included