Dynamic tips conform to every shape of ear for the optimum listening experience throughout all sound ranges. Air hole structure was used for EK2 to make it rich in sense of space. Air hole that was tuned several times not only created rich space impression but also adjusted bass sound precisely for better music listening experiences. Gold-plated stereo plug was used to minimize signal interference and noise. Getting phone calls remotely and replaying music is quite easy thanks to EK2’s perfect compatibility with smartphones. The built-in, high caliber microphone delivers nice phone call quality. EK2’s flat cable is strong enough in terms of durability against twisting or accidental disconnection. EK2’s 1.2M- long cable is convenient enough to use in a pocket or a bag.