The Audemars Piguet Royal Oak Offshore | family history
AP introduced the Royal Oak Offshore in 1993 as a larger, more aggressive interpretation of the Genta Royal Oak. Designer Emmanuel Gueit enlarged the case to 42mm, thickened the bezel ears, and built the watch around a rubber strap rather than the Royal Oak's integrated bracelet. The original ref. 25721 was polarizing: collectors accustomed to the Jumbo's 39mm elegance found it oversized and loud. That response has not aged well. The Offshore became one of the most commercially significant AP references of the 1990s and 2000s, and the secondary market reflects it. The honest framing: if you like the Royal Oak's geometry but want more presence on the wrist and a dive-capable case, the Offshore is the correct watch. If you want the purist Genta proportions, you want the Royal Oak.
Emmanuel Gueit’s 1993 reinterpretation of the Royal Oak: larger case, exposed rubber gasket between the bezel and the case-middle, integrated chronograph. The Offshore took the Genta silhouette and weaponized it; the modern 15710 and 26238 references are AP’s most-traded sport chronographs.
1993–2004 · The ref. 25721, the original "Beast"
AP launched the Royal Oak Offshore ref. 25721 in 1993. The case was 42mm with the enlarged bezel lugs that critics at the time called 'ears.' The original was nicknamed 'The Beast' in the press. Caliber 2226/2840 automatic inside. Available in steel, gold, and titanium variants through the first decade. The original 25721 generation is the collector reference in this family; a clean original in steel trades in the five-to-six-figure range. Not in the Grail Atlas catalog at this depth yet.
No references from this era in the catalog yet.
2004–2016 · The 15700 and 15703: the modern Royal Oak Offshore Diver enters
AP expanded the Offshore into a dedicated diver variant: the 15703 (2009, titanium case, 300m water resistance) and the 15700 (steel, sport). The dive variant became the most commercially significant Offshore: it delivered on the original promise of an oversized, robust, water-capable AP. Caliber 3120 in the 15700/15703: in-house automatic, 60-hour reserve, 40 jewels. The dive Offshore at 42mm with a rubber strap is the watch most buyers picture when they hear 'Royal Oak Offshore.'
No references from this era in the catalog yet.
2016–2021 · The 15710ST.OO: the 15703 successor
The 15710ST (2016–2021) updated the diver Offshore in steel: same caliber 3120, same 300m water resistance, revised case geometry. Available in black, blue, grey, and green dial variants, each with a matching rubber strap. The color programs on the 15710 introduced the 'matching set' aesthetic that became standard on the modern Offshore. An example of this generation is in the Grail Atlas catalog.
- OpenOffshore at 42mm is the most wearable size in the line and the entry point for ROO collectors watching secondary prices.
2020–present · The 15720ST: current Diver
The Royal Oak Offshore Diver 15720 (2020–present) is the current production: 42mm steel, caliber 3120, ceramic-insert bezel, 300m water resistance. Updated case geometry relative to the 15710 with revised lug-to-bracelet flow. Available in steel with multiple dial colors. The 15720 sits alongside the larger Royal Oak Offshore Chronograph (15400/15401 line) as the two principal current Offshore references.
How to read this family
Three honest questions for any Royal Oak Offshore buyer:
- Royal Oak or Royal Oak Offshore? The Royal Oak (39–41mm, Genta's original proportions, no rubber strap option on most references) is the prestige collector choice and trades at higher multiples. The Offshore (42mm, rubber strap, dive-capable) is the more wearable daily sport watch and trades at lower premiums relative to retail. The choice is proportional: if you want the cleaner Genta design, Royal Oak. If you want something that reads larger and more contemporary, Offshore. Both are legitimate AP watches; neither is lesser.
- Is 42mm too big? The Offshore was designed to be big; that is the entire premise. At 42mm with the extended case ears it wears closer to 44mm in wrist presence. On a 7.5-inch wrist or larger it works well. Under 7 inches, the Royal Oak's 39–41mm proportions are more balanced. Try both if you can.
- Diver or Chronograph? The Diver (15710/15720) is the simpler, cleaner Offshore: no chronograph subdials, cleaner dial layout, 300m water resistance. The Chronograph (15400/15401) adds a three-register chronograph and is the higher-complication choice; it sits at a higher price. For most buyers who want the Offshore as a daily sport watch, the Diver is the correct reference. The Chronograph makes more sense for buyers who genuinely use chronograph functions.
Related families: Royal Oak · Nautilus · Overseas
Sub-lines
- OpenThe dive-rated Offshore: a 300m-capable variant that adds an internal rotating bezel to the already imposing Offshore case. The internal bezel (operated by a separate crown) keeps the outer profile clean while meeting professional dive watch specifications.
References in this family
Which ref to buy
The Royal Oak Offshore launched in 1993 as a larger, more aggressive interpretation of Genta's original Royal Oak -- more case thickness, a pronounced crown-protection system, rubber and textile straps. It divided opinion at launch and built a distinct following separate from the Royal Oak collector community.
- 1Open
Royal Oak Offshore Diver 15710 -- the RO Offshore for buyers who want 300m water resistance in the AP sport format.
- The case for it:
- Cal. 3120, automatic, 42mm, 300m water resistance, unidirectional diving bezel. The Offshore Diver is the most functional Royal Oak Offshore -- genuine dive spec, caliber 3120 (the standard RO movement), and the Offshore aesthetic without the rubber strap bulk of the chronograph versions. Secondary pricing has settled below the standard Royal Oak but demand is steady.
- Consider instead if:
- The Royal Oak 15202 at smaller case size has stronger long-term collector standing. The Offshore Diver is the correct choice for buyers who want AP specifically in a serious dive tool.
- 2Open
Royal Oak Offshore Diver 15720 -- the updated Offshore Diver in a refreshed case.
- The case for it:
- The 15720 is the current production Offshore Diver -- updated case geometry, improved bracelet, cal. 4302 in selected references. Same dive specification as the 15710 in a more contemporary form.
- Consider instead if:
- The 15710 and 15720 are closely comparable. The 15720 is the more modern buy; the 15710 may offer secondary market opportunity as the replaced model.
Rankings last reviewed 2026-06-06. Editorial perspective only. Not financial advice.