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The Cartier Tank Allongée Ref. 1380 is an elegant Art Deco expression in yellow gold that elongates the classic Tank form with graceful proportions. Measuring 14.4 mm wide by 35.5 mm long, this slim rectangular case is fitted with a three-row diamond bezel across the top and bottom, adding refined sparkle without overpowering its design. The ivory dial features slender Roman numerals at the XII and VI, blued-steel sword hands, and Cartier’s signature cabochon crown—creating timeless balance and heritage elegance in a compact silhouette. The Cartier Tank Allongée Ref. 1380 extends the maison’s legendary Tank design into a striking elongated form. Its 14.4 mm × 35.5 mm case, crafted in 18K yellow gold, balances delicate width with graceful length, creating a sleek, jewelry-like profile on the wrist. The bezel is adorned with three rows of brilliant-cut diamonds at both the top and bottom, adding radiance while accentuating the verticality of the Allongée silhouette.

The ivory dial is classically Cartier, marked by bold black Roman numerals at the XII and VI, and an inner chemin de fer minute track. Blued-steel sword hands glide across the dial, while the absence of a date display preserves its symmetry and understated charm. This pure aesthetic ensures the diamonds and elongated geometry remain the focal point.

Inside, a precise quartz movement offers everyday reliability in an ultra-slim format, ideal for discreet luxury. Finished with a sapphire cabochon crown and a refined leather strap secured by a yellow-gold buckle, the Tank Allongée 1380 is both a horological icon and a jewelry piece—elegant, slim, and timeless.