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. Metal second stage case construction uses a larger diaphragm inside a compact casing, increasing breathing sensitivity Air balanced second stage valve smoothes out the inhalation effort when diving at varying depths and supply pressures. Sectional exhaust tee and a first-rate purge help to deliver effortless inhalation and an ease of exhalation that is unmatched. Easy-to-use, adjustable inhalation effort knob to achieve maximum, personalized comfort 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
