Incorporating Roman numerals, blue sword-shaped hands, a winding mechanism crowned with a sapphire and a rail-track minute circle: the Ronde Louis Cartier watch is a classic timepiece by Cartier. The alligator-skin strap may be paired with a choice of rose gold or white gold or with diamonds.

Case in 18K white gold set with round-cut diamonds, 18K white gold circular-grained crown decorated with a diamond, sapphire crystal, silver grained dial, Roman and Arabic numerals, apple-shaped blued-steel hands, alligator-skin strap, 18K gold adjustable deployant buckle, workshop-crafeeted mechanical movement with manual winding, Cartier caliber 430 MC, transparent back, water resistant to 30 meters / 100 feet. Case dimensions: 36 mm diameter, 6.51 mm thick.