A. Lange & Söhne Unveils Datograph Perpetual With Platinum Bracelet

German luxury watch brand A. Lange & Söhne is putting a new spin on one of its most complicated watches, the Datograph Perpetual, with the unveiling of a limited edition in platinum with a specially developed platinum bracelet and diamond hour markers. Just 50 pieces will be made.

The new watch marks 20 years since the Datograph Perpetual was first introduced in 2006, combining two highly sophisticated complications: a flyback chronograph and a perpetual calendar. While the watch is currently offered in white gold on a leather strap, this new edition takes a decidedly different approach, introducing a platinum case and bracelet that lend it an entirely new personality.

What makes this edition particularly noteworthy, however, is the bracelet itself. Rather than simply replacing a leather strap with a metal bracelet, Lange developed an entirely new five-row platinum bracelet expressly for the Datograph Perpetual. It is the first time the model has been fitted with one.

During a recent exclusive interview in New York, I spoke with Charles Langlois, Brand President A. Lange  & Sohne Americas, about the thinking behind the new watch and the challenges of creating a bracelet that would complement the Datograph’s distinctive design.

The new bracelet builds on the experience Lange gained developing the bracelet for its sporty Odysseus collection, but the objective was never to simply adapt that bracelet for another watch. As Langlois explained, the goal was to create “our own bracelet in platinum, something much heavier in feel and that works on a Datograph that looks like a bracelet  fit for a Datograph,  not just taking an Odysseus bracelet and putting it on a Datograph.”

Creating a bracelet for a watch of this complexity and weight presents its own challenges. Platinum is considerably denser than stainless steel, and achieving the right balance between substance, flexibility and comfort requires careful attention to the construction and articulation of each link. The company was able to draw on “a lot of learnings from the many years we took to do the Odysseus bracelet,” he said, particularly when it came to the relationship between the lugs, bracelet links and comfort.

The attention to detail extended even to features the company ultimately decided not to include. For instance, Lange experimented with incorporating the micro-adjustment system found on the Odysseus bracelet, which allows wearers to fine-tune the fit.

“We tried. It doesn’t look good,” Langlois said. “Aesthetically it’s too bulky for something a little more refined, and in platinum it just doesn’t work,” he explained, adding that the decision ultimately came down to delivering the best possible bracelet feel and appearance.

The new platinum bracelet features five rows of links with alternating polished and matte finishes, lateral chamfering and an integrated design that flows into the 41mm platinum case. It is secured by a platinum deployant buckle.

The bracelet isn’t the only aesthetic departure. The black silver dial features 11 baguette-cut diamond hour markers totaling approximately 0.13 carats. Applied individually by hand, the diamonds provide subtle flashes of brilliance without overwhelming the watch’s multiple indications. Two diamonds mark 12:00, while the markers at 4:00 and 8:00 are omitted to accommodate the subsidiary dials.

At the heart of the watch is the manually wound caliber L952.1, a movement comprising 556 individual components, including 223 devoted to the perpetual calendar alone. The movement combines a column-wheel-controlled flyback chronograph, capable of measuring elapsed time to one-fifth of a second, with a perpetual calendar that automatically accounts for months of different lengths and leap years. Its precisely jumping minute counter makes elapsed time easy to read, while the signature Lange outsize date takes pride of place at 12:00.

Bringing these functions together is no small feat. It was years in the development stages before the brand released the movement 20 years ago. I remember when the first Datograph Perpetual made its debut. The highly complicated caliber was immediately sought after by collectors and  the line remains one of the most coveted of the brand’s offerings thanks to its complexity but also its incredibly clean looks.

Highly technical, the chronograph mechanism incorporates an intricate system of levers and rockers, some of which must be particularly long to accommodate the outsize date and the positioning of the subsidiary dials. Meanwhile, the perpetual calendar will require no manual date correction until March 1, 2100, and the moon-phase display is engineered to deviate by just one day over 122.6 years, assuming the watch remains running continuously.

Through the sapphire crystal caseback, the caliber reveals the intricate architecture of the chronograph, including its column wheel, levers and bridges. It also enables viewing of the highly decorated hand-finishing techniques, with untreated German silver plates and bridges, a hand-engraved balance cock and screwed gold chatons. As is customary at A. Lange & Sohne, the movement is assembled twice, allowing the watchmakers to ensure that the components are properly fitted and finished before final assembly.

For Lange, the new Datograph Perpetual is less about following the growing interest in luxury watches on metal bracelets and more about creating something exceptional within its existing collection. As Langlois emphasized during our conversation, the brand does not develop watches simply to follow trends.

Whether the new bracelet will eventually find its way onto other Lange watches remains to be seen. What is certain is that the platinum Datograph Perpetual represents a distinctive new interpretation of one of Lange’s most technically accomplished watches.