Medium size (~30–33 mm) 18k yellow gold; Swiss quartz; silvered Roman dial; leather or bracelet. Diabolo de Cartier: rounded case with sculptural, ball‑tipped lugs; silvered or mother‑of‑pearl Roman dial; blued hands; sapphire cabochon crown; sapphire crystal; approx. 30 m water resistance; bracelet or leather/satin strap.