Cartier Tank Americaine Chronoflex, ref. 1730 +SP

Cartier Tank Américaine 1730.

In 1998, a time when watches often had to be large and robust, Cartier proved with the Tank Américaine (ref. 1730) that true strength lies in refinement. This watch is more than just a piece of jewelry; it pays homage to the classic Tank shape, but with a bold, elongated, and gently curved case that follows the contours of the wrist as if forged for it.

Crafted from solid 18-karat yellow gold, this watch exudes a warmth that only Cartier can capture so masterfully. The case, with its modest yet powerful dimensions of 26 x 36 mm, is protected by a scratch-resistant sapphire crystal. The iconic flanked crown, set with a deep blue sapphire cabochon, is accompanied here by two pushers that operate the chronograph function. The Chronoflex (also called Chronoreflex) is Cartier’s name for their advanced “mecha-quartz” movement, usually caliber 212P.

Although the watch is battery-powered, it is anything but a standard quartz movement. It is a technical masterpiece developed in the 1990s (often in collaboration with Piaget) to fit complex functions into the flat cases of the Tank series.

The pushers often feel “clicky” and direct, similar to a mechanical chronograph, because the electronic brain controls mechanical components to advance or reset the hands.

A closer look reveals the world of Cartier on the dial:

The secret signature: Subtly incorporated into the Roman numerals at 10 o’clock, the ultimate proof of authenticity for the connoisseur. Precision: A central chronograph hand and black inner 1/5-second scale add a sporty touch to this otherwise classic watch.

Blue steel hands: The signature “épée” hands contrast beautifully with the light dial and complement the sapphire in the crown.

This watch is fitted with a deep black Cartier crocodile leather strap, secured by the renowned 18k gold folding clasp. This clasp not only ensures security but also creates a seamless, luxurious fit on the wrist.

Inside, a highly reliable quartz movement ticks away, making this model the perfect companion for those who appreciate effortless style. This particular example comes with official service papers, underscoring the watch’s meticulous history.