Case and dimensions
The case is stainless steel, 36mm in diameter and 10.05mm thick. That thickness matters more than the number suggests, because it lets the watch slip under a shirt cuff without fuss. The shape is round with softly beveled flanks that echo the profile of the central bracelet links at twelve and six o’clock, so the case and bracelet read as one continuous object rather than two parts bolted together.
Water resistance is rated to 30 metres. This is a watch for daily life, rain, hand washing and travel, not for diving or swimming.
The crown carries the Calatrava cross, Patek Philippe’s emblem, which is a small detail that collectors always check first.
The diamond bezel
The bezel is set with 160 brilliant cut diamonds arranged in two staggered rows using Patek’s dentelle setting, a lacework technique that makes the stones sit tight and continuous with almost no visible metal between them. Patek Philippe currently lists the total weight for this bezel at approximately 0.81 carat, while earlier documentation and older listings for the reference quote around 0.77 carat, so you may see both figures quoted honestly by different sellers.
Every stone is factory set by Patek Philippe. This is important and worth saying plainly, because aftermarket diamond setting destroys value on a watch like this. Factory set stones are part of the reference itself.
Dial
The dial is olive green with a sunburst finish radiating from the centre. The Arabic numerals are applied white gold with a white luminescent coating, as are the rounded baton style hour and minute hands. There is a sweep seconds hand and a date aperture at six o’clock, framed in white gold, which keeps the dial symmetrical rather than lopsided. Swiss Made sits at the base of the dial.
The result is a dial that is genuinely readable at a glance, which sounds like a low bar until you compare it with most diamond set watches in this price bracket.
Movement
This is where the Twenty~4 Automatic earns its name. Examples produced from the 2018 launch carry the self winding caliber 324 S C, the same family of movement found in Patek’s men’s models. More recent production of this reference is listed by Patek Philippe with the self winding caliber 26-330 S C, an evolution of that architecture featuring a Spiromax balance spring in Silinvar and a redesigned winding system.
Either way you get a self winding mechanical movement with sweep seconds and date, a 21K gold central rotor, a power reserve in the region of 35 to 45 hours, and finishing carried out to the standards of the Patek Philippe Seal. Chamfered and polished edges, Geneva stripes and a beautifully laid out bridge architecture are all visible through the sapphire crystal case back. If you are buying this reference and the movement matters to you, ask the dealer to confirm which caliber your specific example carries. We are happy to confirm that on request.
Bracelet and clasp
The bracelet is entirely hand polished steel, following the collection’s signature layout of wide, softly curved central links flanked by two tier outer links. It is one of the most comfortable integrated bracelets in the business, largely because those cambered links let it drape rather than sit rigid.
It closes with Patek Philippe’s patented fold over clasp, secured by four independent catches. Four. That level of redundancy on a clasp is unusual and it tells you exactly how the brand thinks about the risk of a watch like this coming off a wrist in a taxi.