Santos-Dumont watch, large model, Manufacture mechanical movement with manual winding, caliber 430 MC. 18K yellow gold (750/1000) case, beaded crown set with a sapphire cabochon, silvered satin-finish sunray-effect dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal. Semi-matte navy blue alligator leather strap, 18K yellow gold (750/1000) ardillon buckle. Case dimensions: 43.5 mm x 31.4 mm. Thickness: 7.3 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).