Santos de Cartier Watch Santos de Cartier Watch, large model, mechanical self-winding movement, caliber 1847 MC. Steel and amorphous diamond-like carbon (ADLC) case and bezel, steel crown set with a faceted black synthetic spinel, black dial, blued steel sword-shaped hands with luminous material, and sapphire crystal. First strap made of rubber, second strap made of black alligator leather, with a steel buckle.