The ATH-CK100 the first inner-ear earphones with triple driver from Audio-Technica, considered the world's smallest Triple Armature Earphones. Featuring a full titanium housing which keeps the total weight under 4 grams. ATH-CK100 produces high dimensional sound and allows the user to enjoy music in an articulate perspective. With the inner-ear structure, the earbuds prevent the unwanted noise to disrupt the high quality sound. This ultra small and lightweight earphone from Audio-Technica will change the way you listen to your music.