18K yellow gold and steel, steel case, 18K yellow gold bezel, steel octagonal crown set with a faceted synthetic spinel, sapphire crystal, silvered opaline dial, Roman numerals, luminescent sword-shaped black oxidized-steel hands, alligator-skin strap, specific Santos 100 18K gold and steel double adjustable deployant buckle, mechanical movement with self-winding Cartier caliber 049, water-resistant to 100 meters / 330 feet. Case dimensions: 51.1 mm x 41.3 mm, 10.34 mm thickness.