Audemars Piguet runs a summer-colour exercise on the Royal Oak Offshore most years, and the 2026 edition, shown on June 9, spreads across both case sizes of the Selfwinding Chronograph. The headline is not a colour, though. It is the 37mm case, which gets a new movement and, for the first time in this chronograph, a titanium version.
The 37mm, and a new movement
The smaller Offshore chronograph now runs Calibre 6401, an in-house integrated chronograph built for the 37mm case. It measures 5.7mm thick across a 27mm diameter, beats at 4 Hz, and holds 55 hours of power reserve from 350 components and 44 jewels. An integrated chronograph is one designed as a single unit rather than a base movement with a chronograph module bolted on, which keeps the watch thinner and the pusher action crisper. The case is 37mm wide and 11.5mm thick, with a sapphire crystal front and back and 50 metres of water resistance.
The version AP is leading with is titanium, the first time the 37mm Offshore chronograph has been offered in the metal. It is finished in turquoise across the whole watch: the Méga Tapisserie dial, the inner bezel, the sub-counters and the rubber strap all carry the colour, with rhodium-toned numerals and white gold hands for contrast. It is priced at CHF 32,500. Steel and pink gold versions of the 37mm round out the 26430 series above that figure.
The 42mm, in summer dress
The larger case is unchanged mechanically and keeps Calibre 4404, the brand's integrated automatic chronograph for the 42mm Offshore. What changes is the dressing. There is a grey Méga Tapisserie dial picked out with turquoise numerals and a yellow central chronograph hand, offered in both steel (26238ST) and titanium (26238TI). There is a second grey dial that swaps the turquoise and yellow for a single run of orange around the chronograph track and pushers. And there is a black dial with pink accents and a pink pusher. All three sit on textile straps with contrast stitching to match the dial.
These are loud watches, and they are meant to be. The Offshore has always been the line where AP lets the colours run, and the summer releases are the clearest expression of that. None of the accent schemes is a limited edition in the numbered sense, though AP tends to make the summer colours in small, quietly capped batches and move on the following year.
The read
The interesting move here is the 37mm in titanium. AP has spent the last few years widening the Offshore at the smaller end, and putting a new integrated calibre and a lighter metal into the 37mm case signals that the size is being treated as a full member of the line rather than a women's variant of it. The turquoise titanium at CHF 32,500 undercuts the 42mm pieces and is the one to watch. The 42mm colours are the seasonal part of the exercise, fun and finite. The 37mm with Calibre 6401 is the part that stays.
