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Audemars Piguet · Family: Royal Oak Offshore

Audemars Piguet Royal Oak Offshore Diver 15720ST.OO.A010CA.01

The Audemars Piguet Royal Oak Offshore Diver 15720ST.OO.A010CA.01 is the 42mm steel version with a black dial and pink accents of the Offshore line's dive watch, featuring a black ceramic unidirectional inner bezel ring. It runs the in-house Caliber 4308 with 60 hours of power reserve. Cazador has no verified price observations yet (n=0). Its standout detail: it includes AP's patented quick-release interchangeable strap system, letting the rubber strap be swapped without tools.

Specifications

Case diameter
42 mm
Case thickness
14.2 mm
Case material
Stainless steel
Movement
Caliber 4308, in-house, automatic
Frequency
28,800 vph (4 Hz)
Power reserve
Minimum 60 hours
Jewels
32
Components
234
Functions
Hours, minutes, center seconds, instant-jump date
Water resistance
300 m
Bezel
Black ceramic unidirectional inner ring, polished-steel octagonal outer bezel with eight hexagonal screws
Dial
Black with pink accents
Strap
White rubber, quick-release interchangeable system
This generation
2021 (relaunch with Caliber 4308)

Price & trend

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History

The Royal Oak Offshore family was born in 1993 as a larger, more sport-oriented take on Gerald Genta's original 1972 Royal Oak, and within it the Diver variant debuted in 2006 as AP's entry into professional dive watches, adapting the Royal Oak's octagonal language to a more robust case and a graduated unidirectional bezel.

In 2021, Audemars Piguet fully overhauled the Offshore Diver line with the current generation, identified by the base reference 15720ST. The most significant change was the introduction of the in-house Caliber 4308, a newly built automatic movement with an instant-jump date, sapphire case back, and manufactured entirely in-house at AP, replacing the ETA/Dubois-Depraz base caliber used in prior generations.

This generation also introduced a patented quick-release interchangeable strap system, letting wearers swap between different colored rubber straps without tools or a watchmaker's help — a solution other high-end manufactures have since adopted in their own sport lines.

Reference 15720ST.OO.A010CA.01, with a black dial and pink accents on a white strap, is part of the color palette AP introduced with this generation to differentiate the Offshore Diver from the rest of the Royal Oak lines, while keeping the case dimensions (42mm diameter, 14.2mm thickness) unchanged from prior generations.

Frequently asked questions

How much does an Audemars Piguet Royal Oak Offshore Diver 15720ST.OO.A010CA.01 cost?

Cazador has no verified price observations for this reference (n=0 as of today). We do not publish estimates without our own sourced market data.

What movement powers the Royal Oak Offshore Diver 15720ST?

The in-house Caliber 4308, automatic, with 32 jewels, 234 components, and a minimum power reserve of 60 hours, introduced with the line's 2021 relaunch.

How does the interchangeable strap system work?

It's an AP-patented mechanism that lets you remove and attach different colored rubber straps without tools, by pressing a release built into the case's lugs.

When was the Royal Oak Offshore Diver launched?

The original line dates to 2006; the current generation, with Caliber 4308 and interchangeable strap, was introduced in 2021.

How deep can the 15720ST go?

300 meters, the standard figure for a professional dive watch, with a black ceramic unidirectional bezel to track dive time.

How does the Offshore Diver differ from the original Royal Oak?

It shares the octagonal design language and integrated-bracelet concept, but with a larger, more robust case, an interchangeable rubber strap, and a dive-watch focus, versus the original Royal Oak's sport-dress profile.

Related references