Features:

• Classic downstream piston design features a chrome-plated brass body with one high pressure and four low pressure ports.
• Patented XTIS (Extended Thermal Insulating System) fully isolates the mechanical elements from the cold, increasing freezing resistance by an average of 50 percent over its predecessor without compromising breathing performance.
• Additional internal technical improvements include a new spring insulating bushing and coating, a new insulating piston bushing, a new insulating sleeve and a new antifreeze cap, all of which contribute to the increase in freezing resistance. Key insulation system components are visible in blue.
• Chrome-plated brass body is 3.5mm smaller than its predecessor but houses an oversized piston by 1.6mm that provides better breat ing performance by increasing airflow by 15 percent.
• Stainless steel removable orifice allows for easier maintenance while extending regulator life.
• Available in either 3364psi/232bar INT or 4350psi/300bar DIN configurations.
• Meets new EN250-2014 standards for cold-water breathing performance.
• Weight: INT 232 - 23.6oz/670g; /DIN 300 -15.9oz/450g.
• Airflow at 2900psi/200bar (l/m/SCFM): 3000/106.
• Intermediate pressure (psi/bar): 138-145/9.5-10.

Description:

The MK2 EVO comes with SCUBAPRO's patented Extended Thermal Insulating System (XTIS) that lets you enjoy an ultra-fast breathing response and maximum airflow with minimal effort -- regardless of how cold the water is. The XTIS makes this possible by fully isolating the mechanical elements of the first stage from the cold, increasing freezing resistance by an average of 50 percent over the previous MK2 first stage.

The MK2 EVO is the only downstream piston-style first stage with internal components specifically designed to resist freezing in extreme cold-water conditions. It is also ultra compact, yet it has a bigger piston that pumps out 15 percent more airflow from a smaller package. So you can expect top-notch breathing performance whether you're reef diving in the warm Caribbean or wreck diving in the chilly Great Lakes.