Arnold & Son unveils the final chapter of its Constant Force 11 collection with the Constant Force Tourbillon 11 Platinum Edition, a limited series of just 11 pieces. This exceptional timepiece celebrates 260 years of horological heritage, paying homage to the legendary friendship between John Arnold and Abraham-Louis Breguet.

Crafted in platinum (Pt950), the 41.5 mm case houses a dial of hand-guilloché tremblé engraving in 18K yellow gold, inspired by the fern-covered moors of Tintagel, Cornwall—Arnold’s birthplace and the mythical land of King Arthur. The white opal subdial and visible constant force mechanism add depth and elegance.

Powered by the A&S5219 manual winding calibre, the watch features a constant force mechanism, one-minute tourbillon, and true-beat seconds. The engraved plate reads: "To the revered memory of John Arnold and Abraham-Louis Breguet. Friends in their time, legendary watchmakers always."

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To celebrate 17 years since its rebirth in 2008, Moritz Grossmann unveils a horological milestone: the PERPETUAL CALENDAR. This grand complication embodies the brand's philosophy of timeless precision, combining traditional craftsmanship with modern innovation.

The PERPETUAL CALENDAR is engineered to automatically account for the varying lengths of months and leap years, requiring no manual correction until the year 2100. This makes it one of the most technically demanding and revered complications in fine watchmaking.

The dial is a study in symmetry and clarity. A full 1–31 date scale encircles the dial, with a cup-shaped indicator framing the current date. The month and weekday are displayed on subdials at 3 and 9 o'clock, decorated with Azurage finishing. Leap year and day/night indicators are integrated into the subdials. At 12 o'clock, a poetic moon phase display features a mother-of-pearl moon gliding across a goldstone sky.

At the heart of the watch is the newly developed Calibre 101.13, a hand-wound movement based on the 100.1 calibre with an added perpetual calendar module. It comprises 401 components — 211 for the calendar module and 190 for the base movement. The movement features optimised stopwork, an integrated manual winder, and an escape wheel bearing in the barrel bridge. The finishing adheres to traditional Glashütte standards, with untreated German silver plates, raised gold chatons, and hand-engraved details.

All calendar functions can be adjusted via recessed correctors on the case, operated with a dedicated tool. A sum corrector allows for quick synchronization of all indicators after periods of inactivity.

The PERPETUAL CALENDAR is available in three elegant variants: rose gold with argenté dial (Ref. MG-003906), rose gold with anthracite dial (Ref. MG-003907), and platinum with argenté/anthracite dial (Ref. MG-003904). Each model is paired with a hand-stitched dark brown alligator leather strap and a matching prong buckle.

Moritz Grossmann continues to honour its namesake's 19th-century legacy with a commitment to "Schönstes deutsches Handwerk" — the finest German craftsmanship. The PERPETUAL CALENDAR is a testament to this enduring vision, offering collectors a timepiece that is as poetic as it is precise.

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Armin Strom extends its golden era with the One Week Skeleton Rose Gold, a new interpretation of its architectural One Week design. This fully skeletonised masterpiece reveals the depths of its mechanics, paying tribute to Mr. Armin Strom’s pioneering artistry in skeletonisation—a craft at the heart of the brand’s philosophy and heritage.

For the first time, the in-house calibre appears in a solid 18K rose gold case, enriching the collection with a warmer character. Rose gold-coloured finger bridges, hands, and applied indexes mirror the tone of the case, while a sleek black textile strap provides a refined modern contrast. Measuring 41 mm in diameter, the case remains compact and ergonomic, while its skeletonised architecture gives the watch a distinctive presence—a harmonious balance of technical craftsmanship and precious metal elegance.

Seven Days of Precision
At its heart lies the hand-wound Calibre ARM21-S, a reinterpretation of Armin Strom’s first in-house calibre. Two mainspring barrels work in series to deliver a steady flow of energy for seven days, wound by two ratchet wheels visible on the dial side—a distinctive Armin Strom signature. Operating at 3.5 Hz, the calibre ensures consistent precision and stability in daily wear.

Inspired by historical pocket watches, the conical power reserve mechanism is complemented by a 3D power reserve indicator, displaying remaining energy with exceptional clarity. Central hours and minutes keep the display symmetrical, while a skeletonised small seconds at 9 o’clock adds an engaging sense of motion.

Transparency in Gold
Every component of the Calibre ARM21-S is decorated by hand, reflecting Armin Strom’s dedication to traditional craftsmanship. Hand-polished bevels, Geneva stripes, circular graining, and finely finished screw sinks demonstrate uncompromising attention to detail. Each One Week is assembled twice—a hallmark of the brand’s commitment to mechanical precision and aesthetic integrity.

Limited to just 50 pieces worldwide, the One Week Skeleton Rose Gold continues Armin Strom’s modern gold chapter—a celebration of mechanical transparency, precision, and craft.

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In the refined sphere of independent watchmaking, DANIEL ROTH has introduced a sophisticated new expression of its Extra Plat collection, elevating the rarity of the line while retaining an understated and disciplined elegance. Rooted in the firm belief of its legendary founder that a thin dress watch represents the ultimate epitome of functional elegance, this model is meticulously designed from the ground up to balance modern sophistication with time-honored craft. Cloaked in 950 platinum—a noble metal long synonymous with rarity and traditional savoir-faire—the watch establishes a quiet yet unmistakable presence on the wrist that will immediately resonate with serious connoisseurs.

The defining silhouette of this timepiece remains the signature double-ellipse case, an iconic geometry originally created by master watchmaker Daniel Roth to beautifully frame complex horological mechanisms. To complement this distinctive shape, downward-sloping lugs have been elegantly integrated to ensure optimal wrist comfort while providing a handsome architectural contrast against the light-tan calfskin leather strap. The dial base is forged from solid white gold, displaying a mesmerizing pinstripe guilloché texture executed entirely by hand using a traditional rose engine. Each line is individually carved with masterful control over depth and spacing, beautifully bordered by a gold minute disc finished with a classic filet sauté edge and sharp black typography.

Beneath this stunning facade lies the core of the timepiece: the ultra-thin, hand-wound manufacture Calibre DR002, fully developed and assembled at La Fabrique du Temps Louis Vuitton under the expert guidance of master watchmakers Michel Navas and Enrico Barbasini. Tasked with striking the perfect balance between chronometric precision and a generous power reserve within a slim 3.1 mm structure, the watchmakers increased the movement's frequency to 4 Hz. To sustain this high frequency without sacrificing energy efficiency or structural stability, the calibre incorporates a specially refined balance wheel featuring a variable-inertia geometry and adjustable counterweights.

An open sapphire caseback reveals the true artistic discipline of the manufacture, where technical engineering and aesthetic restraint seamlessly converge. The movement's bridges are decorated with demanding hand-finishing details, most notably the internal angles which are rendered in a rare, rounded bercé form. Requiring at least twice the execution time of a standard flat bevel, this traditional decoration involves polishing a precise curved radius along the edges to create a brilliant, uniform profile. Shaped and hand-polished in-house using a traditional cabron tool, these components reinforce the brand's unwavering commitment to its guiding philosophy: "La Montre Objet d'Art".
 

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