With the MK 25 EVO/A700 you are guaranteed a reliable, low-effort delivery of air, no matter how hard you're breathing, how deep you're diving, or what your temperature gauge reads. 

The MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instant delivery of air on demand, great sensitivity and extra-high airflow, regardless of how cold the water is.  The A700 second stage, with its metal casing, screw-down cover, metal valve housing [barrel] and over-molded accents, exhibits a real muscularity in design.  Put them together and you get an unparalleled breathing performance whether you're cruising the balmy waters of the tropics or venturing beneaty a polar ice cap.

FEATURES

• Air balance piston first stage in a chrome-plated body deliers consistent and efforteless airflow, regardless of depth, tank pressure, or breathing rate.
• Patented XTIS [Extended Thermal Insulating System] thermally insulates the inner mechanism from the environment, improving cold-water resistance and delaying ice formation in extreme cold-water conditions without compromising breathing performance.
• Anti-freez protection radically increases breathing reliability when diving in the most extreme water temperatures.
• Two opposing high pressure ports allow the first stage to be positioned either up or down.
• Four high-flow and one axila super high-flow low pressure ports on a swivel turret maximize hose routing options.
• External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.
• Rugged full metal second stage case and valve housing [barrel] are able to withstand years or aggressive diving.
• Metal second stage case construction enables the use of 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.
• User controls include a diver-adjustable inhalation effort knob and coaxial Venturi-Initiated Vacuum Assist [VIVA] switch.
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.