Product Description MAYRON MUSY is an independent brand founded in 2013 in Saint-Aubin, in the Brouillé Valley, in the heart of the Three Lakes region at the foot of the Swiss Jura Mountains. After three years of research, we developed "nO-Ring Technology," a mechanical waterproofing system that ensures waterproofing without the use of gaskets. This is the rare Skeleton Armule model, limited to just 13 pieces worldwide, which features this revolutionary waterproof system. The 44mm case is made of lightweight grade 5 titanium (black DLC) and is equipped with the beautifully finished Automatic Movement MM01-SK. Despite its distinctive double-sided skeleton design, it boasts 300m water resistance and a 55-hour power reserve. The rubber strap has a red line down the center, matching the index color for a stylish finish.