convinced they want the Jumbo. Then they put the 15510ST on their wrist and realize how different the two watches feel.
Both share the octagonal bezel and integrated bracelet that made the Royal Oak the Royal Oak. But they are not the same watch, and the gap between them is bigger than the 2mm diameter difference suggests.
The standard Royal Oak (ref. 15510ST) and the Jumbo (ref. 16202ST) take two different approaches under the same design language. One is a modern daily-wear watch with a full-size movement. The other continues Gérald Genta’s 1972 original through an ultra-thin caliber that no other current Royal Oak can match.
The case thickness alone changes where you can comfortably wear each one. Here is how to think through the decision before you commit.
Royal Oak 15510ST Overview
The 41mm Royal Oak Selfwinding is the daily-driver of the current Royal Oak lineup. The 15510ST arrived in 2022 as an update to the 15500ST, with a thinner bracelet, revised dial proportions, and a Grande Tapisserie pattern that fills the full dial width.
It runs the in-house Caliber 4302 with a 70-hour power reserve, hacking seconds, and a quick-set date. AP built this watch for collectors who want to wear a Royal Oak every morning without thinking twice about it.
The line traces back through the 15400ST (2012) and 15500ST (2019). Each generation added movement and ergonomic refinements without changing the fundamental 41mm identity. The 15510ST is the practical workhorse of the family.
It does not carry the heritage weight of the Jumbo, but it outperforms it on raw movement specs and ships in multiple dial colors. Blue, grey, black, silver, and green are all available in steel, which gives buyers more flexibility than the Jumbo line offers.
Caliber 4302 is built for real-world use. Pull the crown and the seconds hand stops, so you can set the time to the exact second. The 70-hour reserve also means a weekend off the wrist is not a problem.
Key Specifications:
- Reference: 15510ST.OO.1320ST.XX
- Production: 2022 to present
- Case Size: 41mm diameter, ~10.4mm thickness
- Case Material: Stainless steel
- Bezel: Octagonal, stainless steel with hexagonal white gold screws
- Dial: Grande Tapisserie, multiple colorways
- Bracelet: Integrated stainless steel, AP folding clasp
- Movement: Caliber 4302 (in-house), 4.8mm thick, 32mm diameter
- Power Reserve: ~70 hours
- Water Resistance: 50m
Notable References
- 15400ST (2012–2019)
- 15500ST (2019–2022)
- 15510ST (2022–present)
