The speaker unit with a 40 mm titanium-coated driver to reduce distortion, and designed with an internal vent allowing the middle bass to be more clear and punchy, which is great for picking up the beat. A gradual dip towards the high frequencies prevent listening fatigue. The Speaker Unit housing is injected moulded from durable ABS material and coated with rubber to give a matte look with a soft feeling. Both plugs feature a cable lock that securely locks the cable in place.