Become one with the water. Welcome to the Zen of diving. The Cressi MC11 SC ZEN PRO regulator is exceptionally lightweight and compact, you’ll barely know it’s there on long dives and it delivers exceptional breathing performance, even under ice. The hyper-balanced diaphragm MC11SC 1st stage features Cressi’s PressureSync technology, which maintains consistent Intermediate Pressure (IP) throughout each breathing cycle. This innovative design reduces pressure fluctuations in the 1st stage, delivering one of the smoothest and most comfortable breathing experiences available. The environmentally sealed design keeps the first-stage chamber dry, eliminating the risk of freezing and contamination. A high-capacity conical filter with a large surface area traps more impurities from the cylinder, ensuring cleaner air and reduced maintenance. The ZEN PRO 2nd stage is purpose-built for cold-water performance, featuring a case made from an innovative Thermoconductive Polymer. This lightweight, durable material offers the heat transfer properties of metal, preventing ice from forming inside the 2nd stage. Radial pressure openings evenly distribute water pressure across the diaphragm, reducing free-flows and ensuring the 2nd stage only delivers air when needed, even in strong currents. With a nickel-plated anti-scratch coating and protective bumpers to guard against knocks and bumps, the MC11 SC ZEN PRO is ready for adventure, from temperate reefs to beneath the ice.