Audio-Technica ATH-CK1WYL In-Ear Headphones are available in a dazzling array of colors, to match any style from glamorous to funky and anything in between. Ultra-compact and feather-light, Audio-Technica ATH-CK1WYL In-Ear Headphones are designed to deliver outstanding sound quality. Audio-Technica ATH-CK1WYL In-Ear Headphones come with three interchangeable earpieces in XS, S and M sizes.