Montecristo 500M features the Swiss-made Sellita SW200 automatic movement, a symbol of Swiss excellence and precision.
The 43 mm stainless steel case with sapphire glass provides solidity, while the titanium back decorated with the engraving of a starfish adds distinctive lightness, creating a perfect balance between robustness, style and comfort. Designed to explore the depths of the sea and equipped with a helium valve, the Montecristo 500M is a reliable companion for deep diving enthusiasts, ensuring waterproofness up to 50 atmospheres (500 metres).
The valve is positioned on the left side of the case and serves to release excess pressure during decompressions in a hyperbaric chamber. During deep dives, divers must breathe a mixture of helium and oxygen to avoid the effects of nitrogen narcosis, a condition that at high depths can cause fainting and disorientation.
Since helium molecules are extremely small, they can penetrate the watch seals, compromising their functions. The helium valve allows trapped helium to safely escape.