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Fears Brunswick 39 Perpetual Calendar: Britain's Most Ambitious Brunswick Yet
A compact perpetual calendar from a 180-year-old British brand hitting a genuine milestone
Results for Perpetual Calendar
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Exclusive · Guide
Fears Brunswick 39 Perpetual Calendar: Britain's Most Ambitious Brunswick Yet
A compact perpetual calendar from a 180-year-old British brand hitting a genuine milestone
Exclusive · Guide
Vacheron Constantin Brings Back the Traditionelle Twin Beat Perpetual Calendar, Now With 70 Days of Reserve
The most clever perpetual calendar in the business just got a meaningful upgrade, and it's still only 41 mm
Wiki · Guide
Perpetual Calendar
The mechanical calendar that knows leap years automatically through 2100.
Dimensions · Guide
Case dimensions: Patek Philippe Perpetual Calendar 3940 (discontinued 2007) Patek Philippe
36 mm × 8.9 mm, lug 19 mm, Cal. 240 Q
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WristBuzz
Time+Tide
The Fears Brunswick 39 Perpetual Calendar marks a new chapter for the British brand
Fears brings high-complication watchmaking back to Britain with the Brunswick 39 Perpetual Calendar, a stunning QP with compact proportions
Deployant
New Release: Fears Brunswick 39 Perpetual Calendar
Fears Watch Company releases the Brunswick 39 Perpetual Calendar with a movement made by the Dubois Dépraz : perpetual calendar module over a Selita base.
SJX Watches
Hands On: Roger Dubuis Excalibur Biretrograde Perpetual Calendar
The Roger Dubuis (RD) Excalibur Biretrograde Perpetual Calendar is something of a bridge across eras for RD, combining the brand’s seminal biretrograde calendar format with the 2000s-era Excalibur case, executed in RD’s current lavishly layered house style. The revised perpetual calendar module brings plenty of haute horlogerie finishing to the dial side, and should prove more reliable than past iterations as well. Initial thoughts The Excalibur Biretrograde Perpetual is a new model, but it feels like a watch that has always been around, combining several familiar Roger Dubuis elements. Chief among them is the biretrograde format, which has been a staple of the brand since its founding era. When the Excalibur Biretrograde Calendar debuted last year, we speculated that a perpetual version was likely in the pipeline, and we didn’t have to wait long to find out. In terms of design, it’s pure RD through and through. The brand has offered glimpses of a return to its roots — the Hommage La Placide was well-received by neo-vintage enthusiasts — but it’s clear the brand remains committed to this bolder, more flamboyant vision of haute horlogerie that it has been championing since the launch of the Excalibur in 2005, albeit at a smaller size. Of course, the design won’t appeal to everyone, but that might be a good thing. Taste convergence favours the classics, but the polarising Excalibur aesthetic will appeal to those who appreciate traditional watchmaking but are ...
Fratello
Looking Through The Blinds: A Peek At The Patek Philippe Cubitus Perpetual Calendar Skeleton Ref. 5840P-001
The introduction of the distinctly different-shaped Cubitus collection in October 2024 didn’t go unnoticed. Patek Philippe stated that the Cubitus collection’s mission is “to offer a new reinterpretation of the ‘elegant, sporty’ style” through a design in which the square bezel adopts rounded corners, “blending the square, the circle, and the octagon.” When you look at the basic […] Visit Looking Through The Blinds: A Peek At The Patek Philippe Cubitus Perpetual Calendar Skeleton Ref. 5840P-001 to read the full article.
SJX Watches
In-Depth: IWC’s ProSet Perpetual Calendar
IWC’s history was dotted with landmark innovations such as Albert Pellaton’s pawl winding system, Kurt Klaus’ famous perpetual calendar, and Richard Habring’s split-seconds chronograph module. Though IWC has arguably been thin on such innovation in recent years, the ProSet perpetual calendar is a long overdue return to form. The calendar’s clever features make it true to IWC’s identity as an engineer’s manufacture. Set entirely via the crown just like the Kurt Klaus calendar, ProSet can also be adjusted forwards and backwards, making it both idiot-proof and convenient. A smaller Big Pilot This bidirectional perpetual calendar module made its debut earlier this year at Watches & Wonders inside the Big Pilot’s Watch Perpetual Calendar ProSet, which blends the manufacture’s latest engineering feat with the beloved styling of the pilot’s watch. The ProSet system is currently only available inside the 42 mm Big Pilot. Powered by a downsized base calibre, the 42 mm ProSet is the first Big Pilot under 46 mm to include a perpetual calendar. IWC has a tweaked and scaled down the its signature Kurt Klaus module in the past for the 42 mm Portugieser and some Portofinos, but somehow it never made into the reduced Big Pilot collection. Unfortunately, these smaller watches lacked the now-iconic digital year display, and instead featured a subtler (but more forgettable) leap cycle aperture. The ProSet brings back the four-digit year display, making this watch almost ...
Hodinkee
Hands-On: The Vacheron Constantin 'Twin Beat' Perpetual Calendar Returns
When Vacheron Constantin announced the original Twin-Beat at SIHH in 2019, I wasn't in the watch space in the same way I am now. I was also focused on a much different price point—the one I shop in, not the one that I've since become fascinated by. So I missed it. A lot of people did, it seems. I don't think this watch, as interesting as it is/was as a first release, was made in particularly large numbers, and for over a year, I heard rumblings about the eventual return of the Twin-Beat. Well, it's here. It's improved. And yes, in the metal, it's both entertaining and impressive. But what is it? Essentially, the watch leverages two balances that beat at different rates to provide either 4 days of power reserve running at 5Hz or 70 days in standby mode at 1.2Hz. Oh, and it's a perpetual calendar as well. We covered the technical aspects back in 2019, so this will focus more on the watch as a revived model. The technical is the key here, but the form factor is impressive as well. A perpetual calendar, with dual balances, measuring 42mm and 12.3mm thick, it's hefty because of the platinum case, but it wears quite well despite the technicality. Vacheron has a tendency to make some impressively complicated watches and, unfortunately, make them quite large in the process. This would never have been a problem in the old days (especially for brands like Patek, which dominated this high-end, integrated complication space), but then again, the specifications of the old days don't ...
Monochrome
Introducing - The Bulgari Octo Finissimo Perpetual Calendar Now Comes in Blue Titanium
When Bulgari launched the Octo Finissimo Perpetual Calendar in 2021, it did what the Octo Finissimo line has done repeatedly over the past decade. It broke another record. At just 5.80mm thick, it became the world’s thinnest perpetual calendar wristwatch, a title it still holds today. Since then, we have seen it in its original […]
WristBuzz
Vacheron Constantin Brings Back the Traditionelle Twin Beat Perpetual Calendar, Now With 70 Days of Reserve
The most clever perpetual calendar in the business just got a meaningful upgrade, and it's still only 41 mm
WatchAdvice
Revisting The Breitling B19 Perpetual Calendar Ice Blue Review
The first standard production watch with the Breitling B19 Perpetual Calendar movement, of course, had to be a Navitimer. We have gone hands-on with it to see how it stacks up! What We Love That ice-blue dial is stunning! Has an amazing wrist presence and an iconic design Easy to use and adjust movement with the perpetual calendar What We Don’t The reverse-style strap can get in the way, depending on your wrist size The 30m water resistance is on the low side The 43mm size will not suit all wrist sizes if you have a smaller wrist Overall Rating: 9 / 10 Value for Money: 9.5/10 Wearability: 8.5/10 Design: 9/10 Build Quality: 9/10 Originally published as: Reviewing The New Breitling B19 Perpetual Calendar In Ice Blue When you think of Breitling, one of the first, if not the first, model that comes to mind is the Navitimer. Not only is it one of Breitling’s most iconic models, but it is also one of the most iconic watches out there, thanks to its history, unique slide-rule bezel and overall design cues that make it stand out. You can easily recognise a Navitimer on the wrist from a distance. In that regard, it’s up there with the Submariner, the Speedmaster, the Luminor, and the Royal Oak, to name but a few. So it stands to reason that it was one of the models to receive the new in-house B19 Perpetual Calendar movement as part of Breitling’s 140th Anniversary Collection. The 18k Rose Gold 140th Anniversary Navitimer B19 Chronograph Perpetual Calendar. This was my p...
Deployant
Review: new Patek Philippe Cubitus Perpetual Calendar Skeleton Ref. 5840P-001
Here is our hands-on comprehensive eview of the Patek Philippe Cubitus Perpetual Calendar Skeleton Ref. 5840P-001 released in WWG26.
SJX Watches
Hands On: Patek Philippe Cubitus 5840 Perpetual Calendar
Patek Philippe’s divisive Cubitus collection enters its third year with the firm’s first truly skeletonised perpetual calendar wristwatch, the Cubitus ref. 5840p-001 Perpetual Calendar Skeleton. As the first member of its clan with a shaped movement, it also welcomes a contemporary aesthetic that breaks with the brand’s established codes of movement decoration, though it’s built on a decades-old foundation. In short, the ref. 5840P is an ideal ambassador for what the Cubitus line can be when it steps out from its brother’s shadow. Initial thoughts The most complicated — and most expensive — Cubitus yet is also arguably the best model in the collection to date, as it probably should be. While on paper it sounds derivative of the Nautilus perpetual calendar, this watch may have the strongest identity of any Cubitus launched so far by fully leaning into the bolder, more contemporary aesthetic that Patek Philippe has, until recently, hesitated to explore. Several details allow the ref. 5840P to have its own identity. The first is the use of a strap, rather than the typical Nautilus-style bracelet. The reshaped movement is another differentiator, as is the new finishing style, which makes it more than just a square Nautilus. Yet the teak deck motif remains central, integrated seamlessly into the skeletonised design. Two other details that stand out are the use of a baguette-cut diamond to denote the platinum case, rather than the usual brilliant-cut stone, and the...
Monochrome
First Look - The New Silver-Toned Patek Philippe In-Line Perpetual Calendar 5236P
Widely regarded as a technical and aesthetic masterpiece, Patek Philippe’s In-Line Perpetual Calendar returned in grand form at Watches & Wonders this year, alongside dozens of other new watches, in platinum with a silver dial. Displaying the day, date and month on a single line in a panoramic aperture at noon, few perpetual calendars can […]
Monochrome
First Look - The Roger Dubuis Excalibur Biretrograde Perpetual Calendar
Last year, Roger Dubuis released a nostalgic watch that paid homage to Mr Dubuis, the brand’s talented watchmaker and founder. Using a restored and remanufactured RD72 bi-retrograde perpetual calendar module (launched in 1999) combined with the automatic RD14 base calibre, the Hommage La Placide was presented in a compact and classically styled 38mm gold case, […]
Monochrome
First Look - The IWC Ingenieur Perpetual Calendar 41 in Titanium
IWC Schaffhausen continues to expand the modern Ingenieur line by once again pairing the 1970s Gérald Genta-inspired integrated case and bracelet with the crown-operated perpetual calendar developed by Kurt Klaus in the early 1980s. Following the steel version launched last year, this 2026 release introduces a full-titanium construction; meet the Ingenieur Perpetual Calendar 41 in […]
Monochrome
Introducing - The Patek Philippe Cubitus Perpetual Calendar 5840P
On the occasion of Watches and Wonders Geneva 2026, Patek Philippe keeps expanding its Cubitus collection with its first grand complication, a perpetual calendar. Presented in a 45mm platinum case, the model stands out with its openwork design and rectangular movement. The Patek Philippe Cubitus Collection was unveiled in October 2024. Marking the brand’s first […]
WatchAdvice
Hands-On With The IWC Ingenieur Perpetual Calendar: A Brilliant New Evolution
The IWC Ingenieur Perpetual Calendar brings one of the brand’s most celebrated complications into its modern integrated sports watch design for the very first time. I take a closer look at what makes this latest evolution of the Ingenieur such a compelling release. What We Love: Compact proportions for a sports watch with Kurt-Klaus’s perpetual calendar design Beautifully executed case and dial finishing Stainless steel makes it more wearable and accessible What We Don’t: No micro-adjustment system on the bracelet clasp Limited strap versatility due to the integrated bracelet design No precious metal option at launch for those wanting a more luxurious take Overall Rating: 8.8/10 Value for Money: 8.5/10 Wearability: 8.5/10 Design: 9/10 Build Quality: 9/10 The Ingenieur has always been one of IWC’s most compelling designs, blending Gérald Genta’s signature aesthetic codes with the brand’s own sporty heritage and technical edge. I’ve been fortunate enough to review quite a few models from the Ingenieur range, which gives a good sense of how the overall collection sits across various sizes and complications. During Watches & Wonders 2025, arguably, one of the biggest shifts to the Ingenieur collection in modern times. The Swiss luxury watch manufacturer presented the Ingenieur in a 41.6mm case, with none other than a perpetual calendar complication sitting inside. The IWC Ingenieur Perpetual Calendar is the first of its kind, released during Watches & Wonder...
Monochrome
Introducing - The Audemars Piguet Royal Oak Perpetual Calendar in “Bleu Nuit, Nuage 50” Ceramic
Audemars Piguet continues to refine one of its most emblematic complications with the launch of a new Royal Oak Selfwinding Perpetual Calendar in 41mm, entirely crafted in “Bleu Nuit, Nuage 50” ceramic. More than a new colourway, this release brings together two of the Manufacture’s most significant recent developments: the darker, historically rooted blue ceramic […]
SJX Watches
Hands On: Panerai Luminor Perpetual Calendar PAM01575
The Panerai Luminor Perpetual Calendar GMT Platinumtech PAM01575 is one of the most unconventional perpetual calendars on the market, combining the brand’s military-inspired emphasis on legibility and robustness with a high-spec, crown-operated perpetual calendar movement designed for daily wear. Housed in a hard-wearing 44 mm Platinumtech case and powered by the P.4100 calibre, the PAM01575 challenges expectations for what a Panerai can be, applying the brand’s utilitarian DNA to one of watchmaking’s most respected complications. A user-friendly perpetual calendar Panerai is a brand rooted in its identity as a supplier of watches and dive instruments to the Italian navy. The brand’s utilitarian aesthetic, with bold dial markings and a distinctive crown guard, earned it a cult following in the early 2000s, and while some of the enthusiasm of that era has waned, the designs remain as recognisable as ever. Military watches are usually designed to be legible and robust, user-friendly traits that make them appealing to civilians. User-friendliness is something of a complication in its own right, and in some ways is one of the final frontiers of movement design. This includes both legibility, and the priority of information on the dial, and functionality, ensuring that the movement is easy to operate and resilient against mishandling. These issues are especially present when it comes to perpetual calendars, which must present a lot of information; George Daniels famousl...
Fratello
Introducing: Two Simply Irresistible 36.5mm Vacheron Constantin Traditionelle Perpetual Calendar Ultra-Thin Watches
The big trend is “small.” And “thin.” Well, those two words perfectly describe the new 36.5mm Vacheron Constantin Traditionelle Perpetual Calendar Ultra-Thin. Not only is the diameter a size “S,” but it also has an 8.43mm case thickness, making it worthy of the “Ultra-Thin” moniker. The pink gold version is the most modern of the […] Visit Introducing: Two Simply Irresistible 36.5mm Vacheron Constantin Traditionelle Perpetual Calendar Ultra-Thin Watches to read the full article.
Hodinkee
In-Depth: The Patek Philippe Reference 1526 Perpetual Calendar
An *exhaustive* exploration of the world's first serially produced perpetual calendar wristwatch, an often overlooked but historically significant reference from Patek Philippe.
Deployant
New: Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin
Vacheron Constantin continues its 250 year celebrations with three new references of the Traditionnelle Perpetual Calendar Ultra-Thin in three expressions.
Monochrome
First Look - The New 36.5mm Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin
Vacheron Constantin unveils two new versions of its Traditionnelle Perpetual Calendar Ultra-Thin in 36.5mm cases, the first to appear without a gem-set case. When it debuted in 2022, the Traditionnelle QP was positioned as a women’s watch, adorned with diamonds and a mother-of-pearl dial. It’s incredible to see the impact that market trends can have […]
Monochrome
Introducing - The Bremont Altitude Perpetual Calendar GMT Mono-Pusher Skeleton
Bremont’s rise has been tied to modern aviation-leaning tool watches with solid mechanics built to be used. After the more experimental Terra Nova pieces, the British brand regrouped around its core strengths with the Altitude collection: a cleaner, aviation-inspired collection that also invited complications. At the top sits the Altitude Perpetual Calendar GMT Mono-Pusher, with […]
Fratello
Introducing: Three New Variants Of The Frederique Constant Classic Perpetual Calendar Manufacture
The Frederique Constant Classic Perpetual Calendar Manufacture is almost a decade old, but it continues to impress and surprise. When introduced in 2016, it was the most affordable Swiss-made mechanical perpetual calendar on the market. On the verge of the watch’s 10th anniversary, its friendly price is still a USP. However, the QP’s updated looks […] Visit Introducing: Three New Variants Of The Frederique Constant Classic Perpetual Calendar Manufacture to read the full article.
Deployant
Frederique Constant Perpetual Calendar three new variations
Released last week at Geneva Watch Days, Frederique Constant adds three new variations to their budget friendly Perpetual Calendar.
Fratello
Introducing: The Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin In Two New Dial Variations
Vacheron Constantin is celebrating its 270th anniversary in 2025 with a steady stream of new releases. Among them is a pair of fresh takes on one of the most elegant sports watches in its stable, the Overseas Perpetual Calendar Ultra-Thin. This model has long been a showcase of the maison’s ability to balance sportiness and […] Visit Introducing: The Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin In Two New Dial Variations to read the full article.
Deployant
Hands-on with the new Vacheron Constantin Overseas Perpetual Calendar ultra-thin
Vacheron Constantin releases a new addition to their Overseas collection, this time adding two new dial variant to the Perpetual Calendar.
Monochrome
Introducing - The Sophisticated & Feminine Montblanc Bohème Perpetual Calendar 36mm
Like many of Montblanc’s watches, the name Bohème was originally assigned to a line of fountain pens. Released in 2014 as a collection of women’s watches, the current collection of automatics and day & night models expands with the arrival of a sophisticated Perpetual Calendar in 36mm rose gold and two-tone rose gold and steel […]
SJX Watches
Up Close: Patek Philippe Retrograde Perpetual Calendar Ref. 6159G
Just launched earlier this year, the Patek Philippe Retrograde Perpetual Calendar Ref. 6159G-001 is the latest in a long line of perpetual calendars with retrograde date, dating to 1993 in the modern day and even further with vintage watches. Though essentially identical in terms of function and display, the ref. 6159G is the most modern take on the concept to date, while being entirely improved in terms of the movement and case. The key elements that distinguish the ref. 6159G are the dial and case: the translucent sapphire dial is tinted in grey and black, while the case sports a bezel and case back finished with clous de Paris guilloche. It’s an unusual combination, but appealing overall, although some elements, like the generous dose of lume, feel out of place. Initial thoughts Patek Philippe’s catalogue is still mostly classically oriented, with watches like the Calatrava ref. 6196P capturing the traditional Patek Philippe style. But the brand has been moving towards a more modern aesthetic. Not all the attempts in the direction have been successful, but the ref. 6159G fortunately manages to do it well. Being modern in flavour also sets the ref. 6159G apart from its predecessors like the ref. 5159. While earlier generations of the retrograde perpetual calendar were fairly evolutionary in style, the ref. 6159G is visually unique. Fundamentally, the ref. 6159G is not exceptionally novel – but it looks good. The hobnail bezel and sapphire dial is a surprising combi...