Santos Dumont watch, large model, Manufacture mechanical movement with manual winding Cartier caliber 9753 MC. 18K pink gold case, octagonal crown set with a faceted sapphire, silver flinqué dial, Roman numerals, blued-steel sword-shaped hands, sapphire crystal, brown semi-matte alligator-skin strap, double adjustable 18K pink gold folding buckle, calendar aperture at 12 o'clock, power reserve at 6 o'clock, case dimensions: 38 mm x 47.4 mm, thickness: 9.3 mm. Water-resistant to 3 bar (30 meters/100 feet).