Mild-proof and sweat-proof design Magnet Human engineering design. Portable and lightweight Control music and calls answer the phone anytime and anywhere. 11 millimeters drivers with neodymium magnets for full-range sound. Two sizes of silicone gel earbud sleeves for a perfect fit. 1.3-meter nylon braided cable with gold-plated 3.5 millimeters plug. Earbud design - Directs high-quality sound into the ear. In-ear design allows for passive noise isolation.