Ergonomic design pumps out the deepest bass, soaring highs, and ultra-clear midrange Lightweight design is ideal for listening during exercise, travel, or for everyday wear Hard chrome earphone finishes for rugged durability and everlasting shine Precision-machined single-billet metal housing prevents vibrations and unwelcome sonic artifacts Built-in mic lets you talk hands-free on your smart phone device Also works with online voice and video chats on smart phone Sealed in-ear construction and multiple eartip designs block out external noise