Introduced: Circa 1999

Purpose / Inspiration: The 21 Chronoscaph was Cartier’s bold step into sport-luxury territory. It blended the Roman elegance Cartier is known for with real chronograph muscle—designed for those who wanted something dressy, but ready to move.

Designer: Released under the Vendôme Luxury Group era, before Richemont took full control—meant to modernize the “Must de Cartier” spirit for a younger, sportier buyer.

Case size: 38mm, stainless steel with rubber-inlay bezel

Case options: Steel only, with engraved Roman numerals molded into the rubber bezel

Powered by Cartier Caliber 272 (ETA 251.272) – Swiss quartz chronograph

Bezel: Fixed, integrated rubber with raised Roman numerals

Dial options: Silvered, black, and navy blue—typically sunray finished with triple subdials (minutes, tenths, hours)

Water resistance: 100m, sapphire crystal, screw-down crown

Bracelet: Integrated steel and rubber link bracelet, curved to match the case shape

Discontinued by early 2010s

Unofficial successor: Cartier Calibre Chronograph and Santos 100 Chronograph took its spot in the catalog

Why it stood out: A Cartier built like a diver, with the brains of a quartz chrono and the heart of a fashion-forward icon

Dress Watch? Think Again: The Chronoscaph 21 wore like a tool watch in a tux

Quartz That Commands Respect: Not just battery-powered—this one split seconds like a pro

Roman Numerals, Meet Rubber: Luxury met sport and shook hands

Everyday Tough, Cartier Cool: 100m water resistance, screw-down crown, and chrono chops