Jaeger-LeCoultre Master Grande Tradition Calibre 948

For the final months of 2025, Jaeger-LeCoultre has unveiled a striking re-imagining of its high-complication world timer: the Master Grande Tradition Calibre 948. This new limited edition brings together the maison’s technical prowess and artistic expression, housed in an 18k pink gold case and produced in just 20 pieces by the Métiers Rares atelier. Showcasing a richly detailed enamel world map and a captivating floating “Universal Tourbillon” that rotates around the dial once every 24 hours, this creation continues the brand’s return to bold, expressive watchmaking that fuses tradition with innovation.
The Jaeger-LeCoultre Master Grande Tradition Calibre 948 comes housed in a refined 18k pink gold case that measures 43mm in diameter and 14.13mm in thickness. The elegant construction features a combination of polished and satin-brushed surfaces, including subtle indentations along the mid-case that enhance its architectural profile. The rounded bezel frames the elaborate dial without distraction, while the short curved lugs allow the large case to wear more comfortably than its measurements suggest.Turning the piece over reveals a sapphire display caseback that offers a detailed view of the automatic movement within. A gold skeletonized rotor bearing the ‘JL’ logo swings over a baseplate engraved with a view of the Northern Hemisphere, an artistic echo of the domed enamel map on the front. While it lacks traditional Côtes de Genève or perlage finishing, the engraved map design serves as both visual balance and thematic continuation.
At 3 o’clock, a polished crown provides intuitive control of the world time and tourbillon functions, completing the case’s thoughtful ergonomics. All topped by a flat sapphire crystal that ensures clarity and scratch-resistance while maintaining the watch’s slim profile. Water-resistance can reach up to 50 meters (165 feet), offering everyday durability for such a complex dress watch.
The dial of the Jaeger-LeCoultre Master Grande Tradition Calibre 948 is an extraordinary showcase of artistic métiers and technical complexity. Framed by a blue city ring indicating the 24 time zones, the outer edge features laser-engraved Arabic numerals and a fine-grained texture that encircles the domed central motif.At the heart of the display is a beautifully rendered world map, crafted in miniature enamel painting across nine carefully blended layers, each color chosen to represent different geographical terrains.Beneath this domed map lies a dial plate decorated with a guilloché wave pattern, over which 15 layers of translucent lacquer have been applied to achieve a rich and vibrant blue depth. The entire scene is framed by a stationary chapter ring that tracks the hours of the day in 24 time zones, while the floating “Universal Tourbillon” glides counter-clockwise around the dial, completing one full revolution every 24 hours, while visually representing the Earth’s rotation.
The hands are rendered in pink gold, harmonizing with the case and adding legibility against the mirror-like finishes of the layered blue background. No applied hour markers or logo interrupt the artful composition; instead, the Jaeger-LeCoultre signature is subtly integrated into the outer ring. The visual result is a seamless blend of function and form, a dial that is both informative and breathtaking in execution.

The “Jaeger-LeCoultre Master Grande Tradition Calibre 948” (Ref#: Q52824E2) is powered by the in-house self-winding mechanical movement, caliber 948 with 42 jewels, 388 components and a 28,800 vph (4 Hz) frequency. This advanced movement integrates a world time complication and a flying tourbillon, uniquely mounted on a rotating platform that makes a full counterclockwise revolution every 24 hours, thus earning the designation “Universal Tourbillon.” Power reserve can last up to 48 hours when fully wound.
Mounted on this watch is a dark blue alligator leather strap, secured by an 18k pink gold folding clasp. It underscores the formal and refined nature of the timepiece while offering comfortable wear for special occasions or daily elegance. This version of the Master Grande Tradition Calibre 948 is a limited edition of just 20 pieces, crafted in 18k pink gold and produced by Jaeger-LeCoultre’s Métiers Rares™ atelier. Its exclusivity, artisanal dial work, and complex mechanics position it as one of the brand’s most refined and collectible releases of the year. For more up to date information visit the official Jaeger-LeCoultre website here.