Large 18k white‑gold case with diamond bezel; automatic movement; mother‑of‑pearl or silvered dial; leather strap. 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.