Santos watch, large model, mechanical movement with automatic winding, caliber 1847 MC. Titanium case, 7-sided crown set with a black faceted synthetic spinel, silvered opaline dial, blued-steel sword-shaped hands, sapphire crystal. Titanium bracelet. Second strap in nubuck alligator leather, with interchangeable folding steel buckle. Both are fitted with the "Quick Switch" interchangeability system.