Audemars Piguet Royal Oak 26240ST.OO.1320ST.04 Self-winding Chronograph “50th Anniversary” 41mm

The Audemars Piguet Royal Oak 26240ST.OO.1320ST.04 marks a pivotal moment in the history of modern luxury sports watches. Released as part of the Royal Oak 50th Anniversary collection, this self-winding chronograph stays true to Gérald Genta’s original vision while quietly upgrading everything that matters to a serious collector.

The 41mm stainless steel case keeps the unmistakable Royal Oak silhouette: sharp bevels, brushed surfaces, and the iconic octagonal bezel secured by eight white-gold hexagonal screws. It feels purposeful on the wrist, not flashy, not timid. Just confident. The proportions are balanced, and the integrated bracelet flows naturally, which is still one of the Royal Oak’s greatest tricks half a century later.

The blue “Grande Tapisserie” dial is where the watch breathes. Sub-dials are cleanly laid out, legibility is excellent, and the applied white-gold hour markers catch light without shouting for attention. This is a chronograph designed to be used, not just admired behind glass.

Inside, Audemars Piguet fits the in-house Calibre 4401. It’s a modern integrated chronograph movement with a column wheel and vertical clutch, offering smoother operation and a flyback function. The 70-hour power reserve means you can set it down for a weekend and pick it up Monday morning without a second thought. Through the sapphire caseback, the special 50th Anniversary rotor adds a subtle nod to the occasion—visible, but never gimmicky.

What makes the Audemars Piguet Royal Oak 26240ST.OO.1320ST.04 stand out is balance. It’s sporty but refined, technically advanced yet emotionally familiar. A watch built for people who actually wear their icons.

Watch Specifications