For divers who want the best. The MK19 EVO / A700 takes our extraordinary breathing A700 and pairs it with an environmentally sealed MK19 EVO first stage that’s extremely resistant to freezing and fouling of its inner mechanism. The MK19 EVO offers a dry ambient pressure chamber that is equipped with a double spring for optimum reliability, and a LP port swivel turret to maximize hose routing options. The muscular A700, with its precision handcrafted full-metal casing, front cover and valve housing, offers best-in-class breathing performance, including effortless inhalation and an ease of exhalation that is unmatched. Technical Information First Stage Small and lightweight S620Ti delivers effortless airflow under all dive conditions Air balanced flow-through piston in a chrome plated brass body provides constant and effortless airflow unaffected by depth, tank pressure, or breathing rate. Easy-to-use, adjustable inhalation effort knob to achieve maximum, personalised comfort Exhaust tee increases performance while directing bubbles out of the field of view Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Air-balanced first stage diaphragm delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate Second Stage A700 Air-balanced valve smoothes out the inhalation effort at varying depths and supply pressures. Rugged full-metal case, front cover and valve housing (barrel) are able to with standyears of aggressive diving. Metal construction enables the use of a larger diaphragm inside a compact casing, increasing breathing sensitivity. User controls include a diver-adjustable inhalation effort knob and coaxial-flow Venturi-Initiated Vacuum Assist (VIVA) lever. Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow. Airflow at 200bar: 2000 l/min
