Sennheiser's CX 100 earphones offer a powerful sound experience with a deep and punchy bass. The ultra-small design guarantees excellent comfort while the included set of ear adapters in four different sizes (XS, S, M, L), ensures effective noise blocking that will really let you feel the beat! With the renowned Sennheiser sound quality for a unique listening experience, the earphones benefit from a convenient compact design for easy on-the-go storage and an ergonomic in-ear design for ambient noise isolation and undisturbed.