One Movement, Two Personalities
Audemars Piguet's W&W 2026 presentation is anchored by a single technical achievement: the Calibre 7139, the brand's new openworked perpetual calendar movement with crown-only adjustment. But rather than present it in one case, AP deploys it in two distinctly different architectures — the iconic octagonal Royal Oak (Ref. 26685XT) and the contemporary round Code 11.59 (Ref. 26443NB).
The Code 11.59 was introduced in 2019 to considerable debate, but over seven years it has matured into one of the most technically interesting round-case sports-dress watches in existence. Giving it the Calibre 7139 is a statement of confidence: this is the platform AP trusts to carry its most ambitious movement.
Specifications
| Attribute | Detail |
|---|---|
| Reference | 26443NB.OO.A002KB.01 |
| Case | Code 11.59 architecture — round, contemporary |
| Movement | Calibre 7139 (in-house, automatic, openworked) |
| Frequency | 28,800 vph (4 Hz) |
| Power reserve | 55 hours |
| Movement thickness | 4.1mm |
| Perpetual calendar | Day / Date / Month / Leap Year / Moon Phase / Week |
| Crown adjustment | All calendar functions via crown only (patented) |
| Water resistance | 30 metres |
The Case for Code 11.59
Where the Royal Oak's integrated bracelet and octagonal bezel create an angular, architecturally precise stage for the movement, the Code 11.59's round case uses double-curved sapphire crystals and a case-in-case construction to create a more intimate, jewel-like presentation. The movement fills the dial space more dramatically in the round case — there is no bezel geometry competing for attention.
For collectors who find the Royal Oak too sporty or too recognizable, the Code 11.59 offers the same horological substance with a quieter visual identity. It is also the more traditional shape for a dress perpetual calendar — the Code 11.59 Calibre 7139 can wear alongside a suit in a way the Royal Oak cannot.
Calibre 7139 — In-House Movement
The movement is identical to the Royal Oak version: a fully openworked automatic perpetual calendar where all complications — day, date, month, leap year, astronomical moon phase, and peripheral week indication — are correctable through the crown alone, without any hidden pushers. This was the most significant feature of last year's Calibre 7138, and the 7139 makes that same user-friendly logic visible through its skeleton architecture.
Freddy's Verdict
The Code 11.59 has always been the more polarising of AP's main collections. But here, it becomes genuinely compelling: a round, openworked perpetual calendar with one of the most thoughtfully designed crown-adjustment systems in watchmaking, in a case that has finally found its ideal complication. If you've been waiting for a reason to take Code 11.59 seriously, this is it. Price TBD — expect it to land above the Royal Oak 26685XT given precious metal options.
