Audio-Technica ATH-CKX9BK SonicFuel In-Ear Headphones (Black) Large 13.5 mm performance enhanced drivers offer a premium listening experience C-tip design fits the shape of your ear for reliable stay-in-place comfort Hard case keeps headphones protected and easy to find every time Includes luxury zippered hard carrying case, Comply foam tips, silicone ear tips (XS/S/M/L), C-tips (S/M/L), and tangle-free flat cable Available in black (BK) and silver (SV)