Montre Ronde Solo de Cartier, ref. WSRN0021.

Incorporating Roman numerals, blue apple-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.

Ronde Solo de Cartier watch, 36 mm, mechanical movement with automatic winding. Steel case, beaded steel crown set with a synthetic cabochon-shaped spinel, silvered opaline dial, blued-steel sword-shaped hands, sapphire crystal, black grained calfskin interchangeable strap, steel double adjustable folding buckle. Water-resistant to approximately 30 meters.