The ATH-CKX7 SonicFuel in-ear headphones feature stay-in-place fit, providing unique comfort in addition to optimal sound. The C-tip configuration nestles within the ear where it locks in place for extra stability. It comes with an enhanced driver system which delivers clear, robust audio for the high octane tempo of your life. The 360° rotating eartip of this headphone adjusts to the unique angle of your ear canal for a personalized fit and better sound isolation. The C-tip design fits the shape of your ear for reliable, stay-in-place comfort.