Patek Philippe Cubitus Collection: The Square Sibling to the Nautilus

Patek Philippe Cubitus: The Square Sibling to the Nautilus Arrives

In October 2024, Patek Philippe made headlines with the launch of an entirely new collection—the Cubitus. Three years after discontinuing the celebrated stainless steel blue Nautilus 5711, the Genevan brand introduced not just a single replacement but a full range of elegant sports watches with integrated bracelets and a distinctive square-ish design.

A New Design Philosophy

The Cubitus represents Patek Philippe's new interpretation of the elegant sports watch category—a segment the brand mastered with the Nautilus in 1976. Where the Nautilus is known for its subtle curves, the Cubitus embraces sharper geometry with what Patek calls a "quadrangular-shaped case" featuring a square bezel with rounded corners.

Despite the angular design, the connection between Cubitus and Nautilus is undeniable. Both share the two-part case construction, the iconic hinges on either side, the embossed dial pattern, and the integrated bracelet design. As Monochrome Watches noted, "the Patek Philippe Cubitus feels like a Nautilus where all curves have been replaced by straight lines."

The Three Models

Cubitus 5821A: The Steel Classic

The full-steel Cubitus 5821A features an olive green dial, inevitably evoking the farewell edition of the steel Nautilus 5711/1A-014. White gold hands and markers complement the sunburst green dial with horizontal embossing. The watch wears surprisingly well despite its dimensions, with a 44.9mm lug-to-lug distance and just 8.3mm thickness.

Cubitus 5821AR: Two-Tone Elegance

The steel-and-gold 5821AR adds 18k rose gold on the bezel, lateral module, crown, and central bracelet links. Its blue dial features rose gold applied markers, creating a luxurious two-tone aesthetic that bridges sport and dress.

Cubitus 5822P: The Complicated Platinum

The flagship 5822P features the Instantaneous Grand Date, Day and Moon Phases complications in a 950 platinum case. A first for Patek, a baguette-cut diamond is set into the bezel at 6 o'clock. The new calibre 240 PS CI J LU features a two-disc big date display and instantaneous jumping mechanism for all indications, jumping simultaneously in 18 milliseconds at midnight.

Patek filed six patent applications for this specific calibre, which retains the 38-48h power reserve despite the energy-consuming complications. The movement is regulated to -3/+2 seconds per day, meeting Patek Philippe's new accuracy standards.

Technical Innovation

All Cubitus models feature a lockable size-adjustment system in the bracelet with four-position micro-adjustment, allowing the watch to be slightly enlarged in warmer weather. The integrated bracelet features vertical satin-brushing on main links with polished central links and bevels.

Frequently Asked Questions

• Is the Cubitus a replacement for the Nautilus? No, the Cubitus is positioned as a sibling to the Nautilus, offering a more angular alternative in the elegant sports watch category.
• What movement powers the time-and-date Cubitus models? The 5821A and 5821AR use the in-house calibre 26-330 S C with central rotor and 45-hour power reserve.
• How does the Cubitus compare to the Royal Oak? While both are square-ish elegant sports watches, the Cubitus features more geometry than the Nautilus but maintains Patek's signature design language.

According to Monochrome Watches, the Cubitus is "much better in real life than what some might have said on social media," with its proportions working surprisingly well on the wrist.

For more on Patek Philippe's sports watch heritage, explore our history of luxury sports watches or discover advanced watch movement technology.