Audemars Piguet Royal Oak Offshore 15720
The 15720 is the current-generation Royal Oak Offshore Diver, and the reference where Audemars Piguet took the Offshore Diver beyond steel. Every example on this page is 42 mm, with an inner rotating dive bezel set by a second crown, a glare-proofed sapphire caseback, and the self-winding caliber 4308 rated to 300 m / 1000 ft.
What separates one 15720 from another is case material and colorway: stainless steel in blue, green and grey, and the 15720CN in white gold with a black ceramic bezel and a smoked red “Méga Tapisserie” dial.
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Audemars Piguet Royal Oak Offshore Diver 15720
The Royal Oak Offshore Diver arrived in 2010 as the 15703, ran through the 15710, and became the 15720 in 2021. The case stayed at 42 mm across every one of them, which is why the reference number — not the diameter — is what you have to read to know what you are buying.
The change that matters commercially is material. Every 15710 Offshore Diver we have handled has been stainless steel: black, white and orange dials, all on the same case. The 15720 is where the line opened up. Alongside the steel references sits the 15720CN in white gold with a black ceramic bezel, and in our own inventory that execution has carried well over twice the price of a steel 15720 in comparable condition. Same 42 mm case, same caliber, same 300 m rating — a different order of money.
How to read a 15720 reference number
Audemars Piguet encodes the case execution and the colorway into the reference string. The segments are stable, but the colorway code is not a universal dictionary — it only means something in combination with the reference that precedes it.
| Segment | Example | What it tells you |
|---|---|---|
| Reference | 15720 | The generation. The current Offshore Diver, successor to the 15710. |
| Case code | ST / CN | The case execution. ST is stainless steel; CN is the white gold version with a black ceramic bezel. |
| .OO. | .OO. | Constant across the Offshore Diver family. Carries no variant information — do not read anything into it. |
| Colorway | A027CA | The dial and strap colorway. Reference-specific, not universal. |
| Suffix | .01 / .02 | The execution variant within that colorway. |
That fourth row is where people get caught. In our own inventory, A002CA is the black dial on a 15710ST and the smoked red dial on a 15720CN. The same six characters, two completely different watches. Match the full reference string, never the suffix alone.
Every 15720 execution, compared
| Reference | Case | Dial | Condition | Availability |
|---|---|---|---|---|
| 15720CN.OO.A002CA.02 | White gold, black ceramic bezel | Smoked red | Unworn | In stock |
| 15720ST.OO.A027CA.01 | Stainless steel | Blue | Unworn | In stock |
| 15720ST.OO.A052CA.01 | Stainless steel | Green | Pre-owned | Sold — 2022 and 2023 examples handled |
| 15720ST.OO.A009CA.01 | Stainless steel | Grey | Pre-owned | Sold |
Specifications common to the steel references: 42 mm diameter by 14.1 mm, glare-proofed sapphire crystal and caseback, black ceramic screw-locked crowns, “Méga Tapisserie” dial with white gold applied hour markers and luminous Royal Oak hands, interchangeable rubber strap with a stainless steel pin buckle. The caliber 4308 runs 32 jewels with a 60-hour power reserve.
What a 15720 costs
At Watch My Diamonds, Audemars Piguet Royal Oak Offshore Diver 15720 watches range from $31,999 to $76,500 across 2 priced listings.
The spread on this page is not a condition spread — both priced examples are unworn. It is the white gold premium. If your budget is set by the steel references, the blue and green 15720ST are the ones to watch; if you are shopping the 15720CN, you are shopping a different segment of the Offshore catalogue entirely.
Royal Oak Offshore 15720 FAQs
What is the difference between the Royal Oak Offshore 15720 and the 15710?
The 15720 replaced the 15710 in 2021 as the current Royal Oak Offshore Diver. Both are 42 mm and both run an automatic movement rated to 300 m, so the diameter will not tell them apart. The practical difference is the range: every 15710 Diver we have handled has been stainless steel, while the 15720 line adds the white gold 15720CN with its black ceramic bezel.
Is the 15720 Royal Oak Offshore a real dive watch?
Yes. It is rated to 300 m / 1000 ft, with a glare-proofed sapphire caseback, screw-locked crowns in black ceramic, and an inner rotating dive bezel operated by a second crown rather than the outer bezel. The functions are hours, minutes, centre seconds, date and dive time measurement — there is no chronograph in this reference.
What does the CN in 15720CN.OO.A002CA.02 mean?
CN is the case code. On the 15720 it designates the white gold execution with a black ceramic bezel, as opposed to ST for stainless steel. It is the single largest price driver within the reference: the CN and the ST share a case size, a caliber and a depth rating, and differ by a multiple in price.
Which 15720 dial colors has Watch My Diamonds carried?
Four so far: smoked red on the white gold 15720CN, and blue, green and grey on the stainless steel 15720ST. The green A052CA has come through in both 2022 and 2023 examples. Availability changes constantly — the grid above shows what is in stock right now.