Name: Audemars Piguet Royal Oak Offshore Diver 15710ST.OO.A002CA.02
Brand: Audemars Piguet
SKU: 15710ST.OO.A002CA.02

The Royal Oak Offshore Diver 15710 is AP's full dive watch interpretation of the Offshore platform: 300 meters of water resistance, a rotating inner bezel, and the same oversized 42mm presence that defines the Offshore line. It ran from 2016 to 2021, giving it a tighter production window than most AP sport references. Collectors pick it up for the combination of genuine dive utility and the Offshore's deliberately aggressive architecture.

What it is

AP produced the 15710ST.OO.A002CA.02 from 2016 to 2021 before discontinuing the reference. The case is 316L stainless steel at 42mm, fitted with a unidirectional rotating inner dive bezel rather than an external bezel , a functional choice that keeps the crown-and-case profile cleaner. Power comes from Caliber 3120, AP's in-house integrated automatic with a 60-hour power reserve and a 22k gold rotor.

The reference shipped in multiple dial configurations across the production run, with the blue dial variants drawing the most collector interest. AP has not issued a direct replacement, which has sharpened secondary-market attention on the 15710 since the discontinuation.

Buying notes

The inner rotating bezel is the first thing to inspect: the mechanism should click positively and the graduation printing should be sharp with no fade or lifting. Crown and pushers take more abuse on dive watches, so verify the crown screws down firmly and the gaskets have been replaced within the recommended interval. Check the sapphire crystal for chips at the edge, since the recessed inner bezel design concentrates any impact stress there.

Lug wear is common on Offshore cases that have been worn without straps, and polishing is frequently used to hide it; the brushed and polished surfaces should still show their original finishing transitions. Confirm the reference number on the caseback matches the 15710ST designation, since the Offshore Diver family has multiple references that look similar at a glance.

Market read

The 15710 trades in the $15,000 to $20,000 USD range on the secondary market depending on condition and dial color. Blue dial examples consistently clear the top of that range and occasionally push above it, particularly when accompanied by box and papers. The 2021 discontinuation has added a floor to pricing that was not there when the reference was in production.

Full-set examples with unworn bracelet and original warranty card carry a meaningful premium over watch-only offerings, sometimes 15 to 20 percent, which is worth knowing if you are negotiating on a bracelet-only listing.

Service expectations

Caliber 3120 is AP's own integrated automatic and AP recommends service every five to eight years for this movement, with documented examples running longer between intervals without incident. Full service at an AP authorized service center typically runs $1,200 to $1,800 USD and includes movement service, seal replacement, and pressure testing to the 300-meter rating. Given the dive specification, do not defer a service if the watch has seen real water use or if the service history is unknown at purchase.

Editorial copy is AI-drafted from primary sources and reviewed by Grail Atlas before publication. Where the text is uncertain about a fact, it says so. Email corrections@grailatlas.com if something reads wrong. Signals on this page (community, OSINT) are clearly separated from the editorial sections.

Offshore at 42mm is the most wearable size in the line and the entry point for ROO collectors watching secondary prices.

Uncommonbest value#1 in familyOfficial press photos

Condition affects price

Pre-owned watches trade across a wide condition spectrum. These ranges are typical for the secondary market.

New Old Stock

Unworn example retaining original packaging, tags, and warranty documentation.

+30–50% vs median

Unpolished

Worn but the case has never been polished; original brushed and polished surfaces are intact.

+15–25% vs median

Polished

Case has been professionally or amateur polished at some point; edge definition is softened.

-15 to -5% vs median

Recently Serviced

Movement has been recently serviced with documented service records; case condition varies.

At median

Project

Needs service, has dial or hand issues, non-original parts, or other remediation before daily wear.

-50 to -25% vs median

Full condition grading guide →

Market price

$14,000–$22,000

steel·2026 Q2

Price trend chart coming soon

The Royal Oak Offshore Diver 15710 is the sportiest AP steel watch and trades at a meaningful discount to the non-diver Offshore; dial color has a significant effect on secondary prices, with limited editions commanding premiums.

Editorial estimate, 2026 Q2. Actual prices vary by condition, date, and box/papers status.

Movement tier: unclassified · caliber AP Cal. 3120: in-house automatic, 21,600bph, 60h PR, 40j; used in Royal Oak Offshore and Royal Oak 41mm; AP-decorated with perlage and Cotes de Geneve · 60h power reserve (2.5 days) · 1 other here share it

Medium-large: suits wrists 6.5 in+ (16.5 cm+)

42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

The Mega Tapisserie dial pattern is the fastest visual tell separating the Offshore Diver from the standard Royal Oak.

Known issues in the market

Standard Royal Oak Tapisserie dials swapped into Offshore Diver cases.
Rubber crown surround deterioration on used examples; original rubber-clad crown is a condition checkpoint.

Area	What to check	What is correct	Red flag
dial	Mega Tapisserie pattern scale	Larger grid squares than standard Royal Oak Tapisserie; grid is visibly coarser and bolder at arm's length	Fine-grid standard Tapisserie inconsistent with Offshore Diver specification; standard Royal Oak dial in an Offshore case
crown	Rubber-clad crown	Original rubber surround intact, no cracking or shrinkage; crown operates the inner rotating bezel smoothly	Cracked, shrunken, or missing rubber surround; crown engaging an external bezel (15710 has inner rotating bezel)
caseback	Cal. 3120 identification	AP caliber markings consistent with Cal. 3120; 21,600 bph movement architecture; 60h power reserve	Non-AP movement; caliber markings inconsistent with Cal. 3120; movement architecture not matching AP in-house design

Common legitimate replacements

Rubber crown surround is a wearable item; deteriorated surrounds should be replaced only at AP-authorized service.
Inner rotating bezel mechanism is operated via crown; any modification to an external bezel indicates non-genuine or modified case.

Expert resources: AP authentication via serial at audemarspiguet.com. WatchUSeek Audemars Piguet forum for Offshore Diver dial variant documentation.

Authentication guide

Last reviewed June 2026

The Royal Oak Offshore 15710ST is a heavily counterfeited reference at the higher-volume end of the AP market. "Mega Tapisserie" dial texture quality, crown guard fit, and pusher guard geometry are the fastest authentication checkpoints.

Known reproduction risks

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HIGH RISK

High-volume counterfeit market for the 15710ST, specifically the steel/blue variant. Fakes range from very obvious to sophisticated super-clone quality.

Mega Tapisserie texture that is shallower, coarser, or less regular than the genuine pattern -- under 10x this is the clearest differentiator
Soft or printed "AP" crown logo above 6 o'clock rather than an applied piece
"Audemars Piguet" text that is printed (no shadow under directional light)
Crown guard gap that shows uneven clearance around the crown
Caseback sapphire that shows a correctly shaped movement but with incorrect bridge finishing or a uniformly finished rotor

Professional authentication before purchase is the collector standard for any Offshore at secondary market prices. The fake volume is significant and quality varies widely.

MEDIUM

Case material misrepresentation -- titanium or ceramic variants sold as steel examples, or steel cases with rose gold components presented as full rose gold examples.

Case weight inconsistent with a 42mm steel sports watch -- titanium cases are noticeably lighter
Case color under good lighting that shows the wrong material tone (titanium has a cooler, slightly darker hue than polished steel)
Reference number on the case midband that does not correspond to the stated case material

Dial variants by era

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Era	Description	Identifiers
2012 to 2017 (steel/blue and steel/black, standard production)	The primary production runs in stainless steel with blue or black "Mega Tapisserie" dials. Blue is the most-encountered variant on the secondary market.	"Mega Tapisserie" pattern: larger, coarser raised squares than the Royal Oak "Grande Tapisserie" -- each square is genuinely three-dimensional with consistent raised depth across the entire dial field Under 10x magnification, each raised square has sharp corners and casts a micro-shadow at its edges "Audemars Piguet" applied text at 12 o'clock is raised, not printed -- it casts a shadow under directional light Sub-dials at 3 (30-minute), 6 (12-hour counter), and 9 (small seconds) are recessed below the main dial plane Screw-down crown flanked by integrated pusher guards -- the crown guard is the signature visual silhouette of the Offshore
2012 to 2017 (grey and white dial variants)	Grey and white dial variants shipped alongside the blue/black production. Same case specification, different dial colorways with the same Mega Tapisserie texture.	Grey dial: cooler tone, often described as "anthracite" -- not blue, not black White dial: bright white ground with the same raised Mega Tapisserie texture visible under raking light Applied indices and sub-dial rings match the dial color family -- grey dial has light indices, white dial has polished applied indices Cal. 3120 (without date, open heart variants used cal. 3132) -- verify sub-dial layout matches the stated caliber

Service part flags

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Dial

Original: Mega Tapisserie texture is machined into the dial surface. The raised pattern is consistent across the entire dial field including up to the edges of sub-dials and chapter ring. The "AP" crown logo above 6 o'clock is applied and crisp.

Replacement tells

Coarser or shallower Tapisserie texture that flattens near sub-dial edges -- genuine Mega Tapisserie maintains consistent depth to the edge of each register
Irregular square sizing visible without magnification on low-quality substitutes
"AP" crown logo that is printed flush with the dial surface rather than applied above it
"Audemars Piguet" text that does not cast a shadow under directional light

Crown and pusher guards

Original: The Royal Oak Offshore crown guard is integrated into the case, flanking the screw-down crown at 3 o'clock. Fit and gap around the crown is precise and consistent across the guard opening. Chronograph pushers at 2 and 4 o'clock are integrated within the guard lugs.

Replacement tells

Crown guard gap that is uneven or shows play -- the guard should fit the crown precisely without visible wobble
Pusher guards that show asymmetric gap on left vs. right side of the crown
Screw-down crown that does not engage with a defined resistance -- genuine Offshore crowns have a positive screw engagement
Case midband that shows the pusher recesses at incorrect positions (2 o'clock and 4 o'clock is correct)

Caseback

Original: Sapphire display caseback on the standard 15710ST. Movement visible with Cal. 3120 and AP-engraved rotor with alternating brushed and polished sectors. Case engravings include reference number, serial number, and case material specification.

Replacement tells

Rotor finish that is uniformly brushed or uniformly polished -- the alternating sector finishing is a specific AP production standard
AP engraving on the rotor that is shallow, soft, or poorly defined
Missing reference number or serial number in the case midband engravings
Caseback that does not show the correct Cal. 3120 architecture (correct bridges, correct finishing)

Bracelet or strap attachment

Original: The 15710ST can be found with the integrated rubber strap (large lug attachment) or aftermarket leather/rubber options. The lug opening and strap pin configuration is specific to the Offshore geometry.

Replacement tells

Non-original AP buckle on the strap -- aftermarket straps are common legitimate modifications, but the buckle should be inspected to verify the overall assembly
Strap attachment that shows stress marks or misalignment at the lug junction indicating incorrect strap width or improper fitting
Integrated rubber strap with incorrect taper or thickness at the lug attachment point

Case back markings

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2012 to 2017 (15710ST stainless steel)

Sapphire display caseback -- exhibition window is standard on the 15710ST
Case midband engraved with full reference number (15710ST.OO.A002CA.01 or variant)
Serial number on the case midband, not on the caseback itself
Cal. 3120 rotor visible with "AUDEMARS PIGUET" engraved and alternating brushed/polished sectors
"AUTOMATIC" designation in the caseback ring text around the movement view
Case material designation engraved alongside reference (ST = stainless steel)

Movement tells

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Cal. 3120 is an automatic movement with integrated date at 3 o'clock (quickset via crown position 2). The date jumps instantaneously at midnight -- a creeping or slow date advance means the date mechanism is worn.
The Cal. 3120 rotor has alternating brushed and polished sectors visible through the exhibition caseback. A uniformly finished rotor is a replacement part or non-AP movement.
The chronograph function engages at 2 o'clock (start/stop) and resets at 4 o'clock. Both pushers should engage with consistent resistance and release cleanly. Sticky or inconsistent pusher return indicates worn column wheel or bridge.
The 3120 runs at 21,600bph (6 beats per second). The seconds hand advances in 6 steps per second -- slower or faster cadence means a different caliber.
Service documentation from AP or an AP-trained watchmaker is the correct standard for this reference. AP boutiques offer serial number verification against production records.

Sources: WatchUSeek -- AP Royal Oak Offshore subforum authentication threads; Audemars Piguet boutique serial verification service; AP Authentication Lab -- Royal Oak Offshore counterfeit documentation.