Three drivers: Outstanding clarity. Intricate detail. A balanced armature and a two separate dynamic drivers deliver outstanding audio performance with huge dynamics and crystal clear sound. Aluminum housing: The in-ear monitor housing is made of lightweight aluminum and has been designed to fit snugly in your ear and be comfortable for long listening sessions. The housing is both ergonomic and engineered for premium acoustic performance. Detachable cable: The earphone cable features a braided design and utilizes low impedance 4 core copper wire to minimize signal loss. The cable features a memory hook to fit the shape around your ear so it fits comfortably and won t fall off while working out. In the box: Trio earphones, 3 sets of ear tips, headphone pouch.