Its compact case is inspired by the S620 Ti and features a scratch-resistant front cap and a classic metal downstream valve. It also features a VIVA immersion/pre-immersion switch and a soft, easy-to-activate ergonomic purge button. The hoses can be installed on either the left or right side for use on stage or pony tanks. Combined with SCUBAPRO's classic MK2 EVO, the only first stage equipped with a downstream piston with internal components specially designed to resist freezing in extremely cold water, this new regulator is durable, reliable, and economical.

FIRST STAGE MK2 EVO

• The classic downstream piston design features a marine chrome-plated brass body with one high-pressure and four low-pressure outlets.
• The patented XTIS (Extended Thermal Insulating System) completely insulates the mechanism elements from the cold, increasing freeze resistance by an average of 50 per cent compared to the previous model, without compromising breathing performance.
• Further internal technical improvements include the spring-loaded insulating bushing and liner, the piston insulating bushing, the insulating sleeve and the frost stopper, all of which contribute to the freeze resistance.
• The chrome-plated brass body is smaller than the previous model, but incorporates an oversized piston that enhances breathing performance by increasing airflow.
• Removable stainless steel orifice facilitates maintenance and extends the life of the regulator.
• Meets new EN 250-2014 standards for cold water breathing performance.
• Weight (g): INT 232, 670; DIN 300, 450.
• Air flow at 2900 psi/200 bar: (l/min/SCFM): >3000/106.

SECOND STAGE

• The classic downstream valve is equipped with a VIVA immersion/pre-immersion switch to control free flows.
• The metal valve housing has a robust construction and increases overall reliability.
• The reversible hose connection facilitates use with side mount configuration, pony or decompression cylinders.
• The super-flow hose has an oversized gauge that allows more airflow with each inhalation.
• The compact Hi-Flow mouthpiece improves both airflow and comfort in the mouth, fitting all mouth sizes.
• CE-certified in accordance with the latest European EN250A standards for all diving conditions, including diving in extremely cold water.
• Weight (without mouthpiece): 5.5 oz/156 g
• Airflow at 2900 psi/200 bar: 1200 l/min. - 42 SCFM.