Balanced flow piston with chrome-plated brass body provides a constant and effortless gas flow, unaffected by depth, bottle pressure, or breathing rate.
 The patented XTIS (Extended Thermal Insulating System) thermally isolates the internal mechanism from the environment, improving cold water resistance and delaying ice formation in extreme cold water conditions, without compromising breathability.
 Antifreeze protection dramatically increases breathing reliability when diving in the most extreme temperatures.
 Two opposing high-pressure ports allow the first stage to be positioned either upwards or downwards.
 Four high-flow ports and one axial super-flow, low-pressure port on a rotating tower maximize hose routing options.