Ronde Solo de Cartier watch, 42 mm, mechanical self-winding movement. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered opaline dial, sword-shaped hands in blued steel, sapphire crystal, strap in alligator skin with round scales, double adjustable folding steel buckle, calendar aperture at 3 o'clock. Case thickness: 8.53 mm. Water-resistant to 3 bar (approx. 30 metres/100 feet).

Roman numerals, blue apple-shaped hands, winding mechanism crowned with a sapphire and rail-track minute circle: the Ronde Louis Cartier watch is a classic timepiece by Cartier.