Scubapro MK2 EVO Regulator 1st stage

Overview It’s the perfect go-anywhere reg for divers who like to keep their diving simple and fun. The MK2 EVO is the only downstream piston-style first stage with internal components specifically designed to resist freezing in extreme cold water conditions. So you can expect top-notch breathing performance whether you're reef diving the Caribbean or wreck diving the Great Lakes. 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% over its predecessor without compromising breathing performance. Additional internal technical improvements include a spring insulating bushing and coating, an insulating piston bushing, an insulating sleeve and antifreeze cap, all of which contribute to the increase in freezing resistance. First stage is 3.5mm smaller than its predecessor but houses an oversized piston by 1.6mm that provides better breathing performance by increasing airflow by 15%. Stainless steel removable orifice allows for easier maintenance while extending regulator life. Specifications 1st Stage Type     Piston 2nd Stage Series     R Series Water Temperature     Cold, Temperate, Warm Connector Type     INT Nitrox Mix     Up to 40% HP Ports     1 LP Ports     4 1st Stage Materials     Chrome-Plated Brass