The Steel Patek Philippe Cubitus 5821A on the Wrist

This was, by far, the most anticipated launch of the year, but also (and unsurprisingly) the most discussed and commented new release of 2024. In fact, I can’t recall witnessing such an amount of reactions from the watch community since the launch of the Audemars Piguet Code 11.59 collection – which, for several reasons, shouldn’t come as a surprise. We’re here to talk, of course, about the Patek Philippe Cubitus. And now that the dust has settled, and following our initial article presenting the collection, we thought it would be relevant to come back on the topic, and specifically to look at the core model, the Steel Cubitus 5821A. It’s time to give us our impressions on the wrist – a.k.a the best way to give an objective opinion about a watch.

Context of the launch

For several months now, we knew Patek was cooking something, a new collection of sporty-chic watches. Knowing the category, the anticipation was high, to say the least. In addition to that, it must also be addressed that Patek Philippe isn’t the most prolific company regarding the creation of entirely new collections. We’ve seen dozens of new watches being released over the past decades, but when it comes to an entirely new design, an entirely new range with an entirely new name, we have to go back to 1997 with the launch of the Aquanaut – at least when it comes to men-oriented collections. There’s been the Twenty~4 in 1999 and Twenty~4 Automatic in 2018, but these were purely feminine lineups.

25 years in the making… 25 years during which watch enthusiasts have been preparing themselves for the next big thing at Patek Philippe… 25 years during which the Nautilus and the Aquanaut collections, both strong advocates of the luxury sports watch genre, have ruled the game. For this reason, launching a new collection had to be difficult. The complexity of the launch was carved into stone, even more so that some collectors were actually waiting for this new collection to feature the replacement to the now-discontinued steel Nautilus 5711A.

Building the success of a brand on a handful of iconic models is both extremely intelligent but also risky. If you look at the Swiss watch industry, we can surely find several points of comparison. Take for instance Rolex and the Submariner or the Daytona. While these watches are all about evolution and incremental updates, without breaking the norms that have been around since 1953 and 1963 respectively, every time a new reference is launched, it generates ample reactions. Imagine if Rolex was deeply redesigning its iconic dive watch…? It would be a proper revolution.

Then take the example of the Code 11.59 by Audemars Piguet collection. For years, we’ve heard complaints regarding the brand’s lack of creativity, focusing mostly if not entirely on its octagonal designs, namely the Royal Oak, Royal Oak Offshore and Royal Oak Concept. The release of Code 11.59, a watch that was designed to be the brand’s more classical, more elegant offering, generated reactions like never before amongst the watch community. Yet, the watch has an extremely refined case and even discreetly pays tribute to the RO with a partially hidden octagonal mid-case. 5 years have passed and the Code 11.59 is now much more accepted than it used to be and is a vessel from incredible complications. And we believe here, at MONOCHROME, that it deserves more attention.

Let’s now move back to Patek Philippe, a brand that has been known for being on the conservative side of things – the old-school elegant, the old-money-kind-of-watch. Remember when Patek released, in 2015, the Pilot Calatrava. The reactions were strong, to say the least. The watch was unprecedented, far from anticipated and visually novel. It’s been close to 10 years now and the watch – as well as several iterations – is still in the collection.

The point of this introduction is simple… There was not much room for appreciation with the launch of an entirely new collection by Patek Philippe. This is how things are nowadays, mostly thanks to social media. But we, at MONOCHROME, believe in a more hands-on and objective approach. Somehow, I want to leave a chance to the product, specifically when we talk about a watch, an object that’s meant to be worn on the wrist, and not judge on a 2-dimensional image. So let’s do that, shall we?

Overall design of the Patek Philippe Cubitus

For its first masculine collection in 25 years, Patek Philippe made a bold choice, a square-shaped watch. In a market where approximately 95% (if not more) of the watch are round, releasing a shaped watch is always a risk. The Cubitus (a.k.a the Cubic Nautilus) is thus a quadrangular-shaped watch with rounded corners. This shape isn’t entirely new to Patek and has been used in the past, yet on rare occasions.

What the Cubitus is really, is a square evolution of the Nautilus. It relies on many of the design cues of the brand’s classic luxury sports watch, starting with the very same case construction in 2 parts – back/caseband and bezel – that was found on the original 3700 Nautilus, and has been brought back in the recent white gold Nautilus 5811G. But it goes beyond that. If you look at the entirety of the case, you’ll see that it is a flattened version of the otherwise rounded Nautilus. The lateral modules, somehow reminiscent of hinges of portholes, have been kept alive but rendered straight, the overall architecture with the raised bezel is identical, the way the central case is connected to the bracelet too and even the finishing of the case, with vertical satin-finished parts and polished bevels on the sides of the bezel, is certainly familiar.

Then on to the dial of this steel Patek Philippe Cubitus 5821A, which is again a classic element. Both the colour, the embossed horizontal grooves, the shape of the hands and the applied markers, are all reminiscent of the Nautilus 5711, and specifically its farewell Olive Green edition. Last but not least, the bracelet is also a familiar element that relies on the same overall design as the Nautilus.

However, a watch is more than the sum of its parts. The result, if certainly rather polarizing and more original than what the Nautilus was (remember that this watch was designed almost 50 years ago… and back then was certainly not the most acclaimed model either), is much more pleasant than what many want you to think. It features a combination of reassuring elements and new traits, bringing a watch with a distinct personality and yet an undeniable Patek DNA. This is possibly one of the reasons for the generous amount of comments we’ve seen around the web. Maybe, if Patek had been more creative and came up with something entirely new, reactions would have been softer. Or maybe not… It’s impossible to know. But by creating a watch with familiar traits, possibly to avoid a true fracture in the brand’s identity, Patek Philippe somehow generated many more reactions than it would ever have anticipated… Something that Porsche, when it first launched the Cayenne in 2002 and the Panamera in 2009, both incorporating elements of the iconic 911 in their designs while playing in different categories, can very well remember.

The Steel Cubitus – Proportions, Nautilus Comparison

Having had the chance to handle all 3 references in the collection, and for several hours, it gave us the ability to fully experience the watch on the wrist. And it’s time to address one of the most recurring comments regarding the Patek Philippe Cubitus; its size and proportions.

For this article, we’ve decided to focus on the collection’s core model, the stainless steel reference 5821A with an olive green dial. And here are the actual measurements, but also elements of comparison with two other important models, the Nautilus 5711A and the Nautilus 5811G.

• Diagonal (from 10 to 4 o’clock): 45mm (Cubitus 5821A) – 40mm (Nautilus 5711A) – 41mm (Nautilus 5811G)
• Thickness: 8.3mm (Cubitus 5821A) – 8.3mm (Nautilus 5711A) – 8.2mm (Nautilus 5811G)
• Lug-to-Lug: 44.9mm (Cubitus 5821A) – 44.5mm (Nautilus 5711A) – 45mm (Nautilus 5811G)
• Width (from 3 to 9 o’clock including crown): 44.5mm (Cubitus 5821A) – 44.1mm (Nautilus 5711A) – 44.5mm (Nautilus 5811G)

So here’s the truth about the steel Patek Philippe Cubitus 5821/1A. It is, for most of its measurements, approximately as big as a Nautilus 5711 or 5811. The all-important factors that are the lug-to-lug, the width including the crown and the thickness, are all roughly the same, or at least playing within the same millimetre. The deceptive number in the case of the Cubitus is the diagonal measurement, which Patek refers as to the diameter (a rather confusing term). The watch is, on most parts and by simply looking at the cold numbers, barely larger than a Nautilus. And it feels on the wrist.

The Patek Cubitus on the wrist

What is true, however, is the visual presence of the watch. Due to a larger area covered by the watch on the wrist – an issue that is true for all square watches compared to a round watch – we’re talking about the basics of geometry here, as a square of a certain width covers around 27% more surface than a circle of the same diameter. With this in mind, and despite identical dimensions for its length and width, the Cubitus has more presence than a Nautilus. But I can’t call it a big watch. Looking at the wrist-worn photos we’ve done – using our editor-in-chief Frank and our colleague Kristian Haagen as models, both having average wrists of about 17.5cm or 18cm – you can see that the time-and-date steel Cubitus wears very nicely, with the bracelet rolling around the wrist beautifully.

What is undebatable is the so-called “wrist presence” and the overall area covered by the watch on the wrist. However, in terms of comfort, the steel Cubitus is as good as it gets. It’s thin, compact regarding its length, not wider than a Nautilus, thin enough to compete with the best of the category – the Royal Oak 16202ST (8.1mm thickness, 49mm lug-to-lug) and the Nautilus 5811G, just to name a few – and it also feels rather light on the wrist.

Now if you compare the Cubitus to another emblematic square watch, the Santos de Cartier large model, you’ll see that this 5821 is actually… much smaller on many levels. The classic large Santos measures 39.8mm in width (excl. crown), 47.5mm in length and about 9.5mm in thickness. As far as I know, I haven’t seen much hate regarding the Santos Large since its release, and in any case, there’s the option for the medium-sized model. And on that topic, I’m pretty sure Patek Philippe has plans for future evolutions of the Cubitus, which could include a mid-size version too.

An important part of the comfort of a watch lies in its bracelet. And here, the Cubitus doesn’t disappoint – obviously, since the bracelet is modelled after the bracelet of the Nautilus, known to be an excellent example of how to design and produce an integrated steel bracelet. As such, the bracelet of the Cubitus is thin, flexible and feels soft to the touch. Another important element, which was implemented already in the 5811G, is the presence of a comfort release on the clasp, which Patek describes as “a lockable size-adjustment system and a patented Patek Philippe fold-over clasp with four independent catches ensuring both comfort and security”. It adds the ability to slightly extend the length of the bracelet, during warm days for example.

Addressing the 30m water-resistance

It might have come to your attention that, since April this year, Patek Philippe has been rating most of its watches to a 30m water-resistance, including its sporty collections such as the Nautilus and the Aquanaut – both previously rated at 120 metres. The official statement stated that “to ensure the homogeneity and clarity of the information provided to clients, Patek Philippe has decided to introduce a new unified standard of water-resistance set at 30 meters for all watches certified as water-resistant.”

The Patek Philippe Cubitus 5821A is no exception to this rule and comes with a claimed water resistance of 30 metres. But things are a bit more complex than that. After talking to a representative of the brand on this topic, we’ve been told that “the only authoritative reference standard in the watch industry and for Patek Philippe is the international ISO 22810 (NIHS 92-20) norm. In this respect, all our watches certified water-resistant to 30 metres are suitable for the activities as described in the press information.” Adding to this, we’ve also been confirmed that “The unified 30-meter water-resistance standard for all our watches certified water-resistant is not linked to a change of the way we develop and produce our watches, i.e. a Nautilus case, that was previously certified water-resistant to 120m, and will be produced in the same way as before, but it will be tested/certified to 30m.” Finally, “All our watches are certified water-resistant to 30m (…) and can be used for aquatic activities, including diving to a depth of 30 metres.” The latter is the most important part, as it is widely known that most watches on the market rated for 30m water-resistance are not capable of diving to a depth of 30 metres, but can resist a standing water pressure of 3 bars (and not the dynamic pressure it would withstand at a depth of 30 metres).

Now, knowing that the Cubitus is constructed in the same way as a Nautilus, we can expect this watch to be safe for swimming or even diving in shallow waters – in fact, it is certainly capable of withstanding far more pressure than what Patek cautiously claims.

Is it all perfect…?

Simple answer; no. Nothing is, because no one is 100% objective and we all have our preferences. Without talking about tastes and colours in this section, we should address a few of the improvements we would make to the Cubitus (something we’ve been discussing with Frank).

First, the entire collection lacks a quick-change system for the bracelet. It would be nice to have the ability to switch easily between a steel bracelet, a rubber strap or a textile strap (like the one offered on the Platinum 5822P). This would have added great versatility to a watch that has been designed by Mister Stern to be the contemporary side of Patek, while more and more watches on the market come with such a feature as standard – and not necessarily luxury models.

Secondly, I would have loved to see a shaped movement, pushing the concept of the square watch to the maximum. Having a square-shaped main plate for the calibre Calibre 26-330 S C doesn’t seem to be that complicated, specifically for a brand that is capable of crafting a grande sonnerie. It would have brought something special on the back, and could even have been linked to a shaped rotor. Also, having a square-shaped plate for the movement would have allowed Patek to address one of the downsides of this movement, its short power reserve. With a larger plate/bridge, the brand would have had more space to implement a larger barrel, and thus a longer mainspring.

Finally, and this is where things might have gone wrong, I would have appreciated a bit more audacity in the design, specifically more differentiation from the Nautilus. I’m not talking about major changes, but small touches to give the Cubitus a more distinct personality. For instance, a different pattern for the dial or more angular mid-links for the bracelet, in order to give more coherence with the case, and maybe a colour that’s not what Patek has used on its Nautilus final edition. I do believe that some of these elements also played a role in the strong reactions this collection had to face. The resemblance with the Nautilus, if somehow reassuring, also meant an inevitable comparison.

Conclusion

After having seen, touched, felt and worn the steel Patek Philippe Cubitus 5821/1A, we can say this; whether you like the design or not (something entirely personal), the Cubitus is everything a Patek should be. The quality is superb, the comfort, despite what the specifications and dimensions suggest, is excellent and the watch has an undeniable Patek feel. Now, the truth is that its design is certainly far from consensual and is more polarizing than what most have expected. But remember that the ALS Odysseus and the AP Code collections also generated strong reactions when launched. Just look at the number of comments posted on car-related channels, when Porsche earlier this year changed the analog rev-counter for a digital one on its new 911. So now imagine if the brand changes drastically the shape of its iconic sports car. Car fans will be in the streets…

Jokes aside, I do believe that the Cubitus faced one of the main problems of our times… Polarized reactions, but mostly from people who have not seen and tried the watch. So I’m asking you a favour. If you can, go to a Patek Philippe boutique or retailer and try the Cubitus for yourself. Just out of curiosity, just for the sake of objectivity. I am not asking you to like it, I’m just asking you to judge it in the metal. In the end, it might surprise you. And also, we should have the same conversation about this watch in 4 to 5 years from now. Time will tell if Patek has been successful or not. But I’m sure that many will change their minds about this watch.