Overview
The Audemars Piguet Royal Oak Offshore Diver in khaki is a purpose-built luxury sports watch with the unmistakable attitude of the Royal Oak Offshore collection. Reference 15720ST.OO.A052CA.01 combines a robust stainless-steel case, a military-inspired khaki dial and a practical rubber strap with the technical credibility expected of a modern mechanical dive watch. Its 42mm profile gives the design presence without losing the clarity and usability that define the Offshore Diver.
At £26,995.00, this Royal Oak Offshore Diver occupies a compelling position within the pre-owned luxury sports-watch market. It offers the visual drama of an integrated-bracelet icon while taking a more adventurous, contemporary direction through its khaki colourway and underwater-focused specification. For collectors seeking Audemars Piguet watches with a strong wrist presence and genuine sporting purpose, this reference is an especially distinctive proposition.
The design is immediately recognisable: a sculpted octagonal bezel, exposed bezel screws, angular case architecture and a broad, highly legible dial. Yet the watch is more than a statement piece. Its rotating inner diving scale, luminous display and water-resistant construction make it a serious instrument as well as an expressive example of contemporary Swiss watchmaking.
Brand and reference history
Audemars Piguet has been based in Le Brassus, in Switzerland’s Vallée de Joux, since 1875. The company’s identity is closely associated with technically ambitious movements, finely executed finishing and designs that challenge traditional ideas of luxury watchmaking. The Royal Oak, introduced in 1972, established the octagonal case and integrated-bracelet language that would become one of the most influential signatures in modern horology.
The Royal Oak Offshore followed in 1993, taking the original concept in a larger, more robust and sport-oriented direction. Its heavier proportions, exposed construction and bold use of colour made it a defining luxury chronograph and an important part of Audemars Piguet’s modern identity. The Offshore Diver developed that same visual vocabulary for underwater use, prioritising legibility, water resistance and a unidirectional diving scale while retaining the collection’s unmistakable architectural character.
Reference 15720ST.OO.A052CA.01 belongs to the contemporary generation of Royal Oak Offshore Diver models. Its 42mm stainless-steel case offers a confident presence, while the khaki dial gives the watch a restrained military character rather than the more conventional black or blue appearance often associated with sports watches. This combination makes it both recognisable and individual within the broader Offshore range.
Dial, hands and design detail
The khaki dial is the defining visual feature of this reference. Its subdued green tone suggests field equipment and military utility, but the execution remains unmistakably luxurious. The colour gives the watch depth in changing light, moving from muted olive to a richer green depending on the angle, while the large applied markers provide structure across the broad dial surface.
Luminous hour markers and hands are essential to the Diver’s character. They support quick reading in low-light conditions and reinforce the watch’s functional purpose, while their generous proportions suit the substantial case. The hour and minute hands are clearly differentiated, allowing elapsed-time readings to be taken quickly, and the seconds hand adds a precise point of contrast as it moves across the dial.
Audemars Piguet’s attention to detail is also evident in the surrounding design. The dial is framed by the substantial case and octagonal bezel, creating a layered appearance rather than a flat, conventional sports-watch layout. The inner diving scale contributes additional technical interest and allows the wearer to monitor elapsed underwater time without compromising the clean presentation of the primary hour markers.
The exposed screws around the bezel are not decorative afterthoughts; they are a central part of the Royal Oak design language. Their geometric arrangement gives the watch an industrial edge, contrasting with the more organic khaki dial and carefully finished case surfaces. Together, these details create a watch that is assertive, legible and unmistakably Audemars Piguet.
Case, bracelet and wearability
The 42mm stainless-steel case is engineered for the demands associated with a professional-style dive watch. Stainless steel provides durability and resistance to everyday wear, while the case architecture gives the watch its characteristic Offshore solidity. The octagonal bezel, integrated crown protection and visible screws create an impression of strength without reducing the refinement expected from the manufacture.
Unlike the traditional Royal Oak models most closely associated with an integrated metal bracelet, this Offshore Diver is paired with a practical rubber strap. The strap supports the watch’s aquatic purpose, offering flexibility, comfort and improved resistance to water-related conditions. Its khaki tone complements the dial and gives the complete watch a coherent, monochromatic appearance.
The contrast between polished and brushed surfaces is a key part of the case’s visual appeal. Brushed planes help control reflections across the larger surfaces, while polished accents emphasise the bevels and angular transitions that make the Royal Oak Offshore so distinctive. This interplay becomes particularly noticeable when the watch is viewed from the side, where the case reveals its layered construction and sculpted profile.
Although 42mm is a substantial diameter, the watch is designed to sit securely on the wrist. The strap follows the case shape and helps distribute the weight, while the broad dial and strong bezel give it the presence expected of an Offshore model. It is best suited to wearers who enjoy a confident sports-watch profile rather than an understated dress-watch footprint.
Movement and technical specification
At the heart of the Royal Oak Offshore Diver is an automatic mechanical movement, providing the convenience of self-winding operation for regular wear. As the wrist moves, the rotor winds the mainspring, helping maintain the power reserve without the need for daily manual winding. As with any mechanical watch, accuracy and power-reserve performance depend on condition, usage and servicing history.
The watch is designed as a genuine dive instrument, with a water-resistant construction and a rotating inner diving scale. The internal scale can be operated through the dedicated crown at the case, allowing elapsed-time measurement while keeping the external bezel focused on the watch’s distinctive Royal Oak form. This arrangement is one of the defining technical characteristics of the Offshore Diver.
Key specifications include a 42mm stainless-steel case, a khaki dial, luminous hands and hour markers, an automatic movement, a rubber strap and a dive-watch configuration with an internal rotating timing scale. The caseback, crown system and seals form part of the watch’s water-resistance architecture, although water resistance should always be treated as a technical condition rather than a permanent guarantee.
For underwater use, a watch should be inspected and pressure-tested at appropriate intervals by a qualified professional. A pre-owned mechanical watch may require different maintenance depending on its age, usage and previous service history. Buyers should therefore distinguish between the original technical specification and the current condition of an individual example.
Sizing and how it wears
The 42mm case gives this Royal Oak Offshore Diver a strong but versatile wrist presence. On a medium or larger wrist, its proportions appear balanced and deliberate, with the wide strap and substantial case working together as a single design. The watch has the visual authority associated with a luxury sports model, but its khaki colourway prevents it from feeling overly formal or conventionally flashy.
On a smaller wrist, the diameter and case thickness will be more noticeable. That is part of the Offshore appeal: this is not intended to disappear beneath a cuff. Instead, it delivers a sculptural profile, clear dial presentation and a tactile sense of engineered construction. Trying the watch on is the best way to assess how the lug shape, strap length and case profile suit an individual wrist.
The rubber strap makes the watch adaptable across casual and active settings. It is naturally suited to leisurewear, travel and outdoor use, while the quality of the finishing allows it to sit comfortably alongside elevated casual clothing. The khaki palette is particularly easy to pair with navy, black, grey and earth tones, giving the watch more versatility than its technical appearance might initially suggest.
For those comparing it with other models in the collection, the Diver offers a more focused and utilitarian wearing experience than a Royal Oak Offshore chronograph. The configuration is cleaner, the dial is more instrument-like and the absence of chronograph registers gives the watch a direct, purposeful character.
Collectability and market value
The Royal Oak Offshore Diver benefits from several qualities that support enduring collector interest: a strong Audemars Piguet design identity, a clearly defined sporting purpose, a modern 42mm case and a distinctive colour combination. Khaki has become an increasingly important tone in contemporary luxury sports watches because it offers personality without the high contrast of brighter colours. Here, it gives the familiar Offshore architecture a more tactical and contemporary expression.
Reference 15720ST.OO.A052CA.01 is likely to appeal to collectors who want something less predictable than a black-dial sports watch while retaining the recognisable codes of the Royal Oak Offshore. The exposed bezel screws, angular case and rubber strap make its identity immediate, while the khaki dial ensures it stands apart from more common variants in a collection.
Market value in pre-owned watch collecting is influenced by numerous factors, including condition, completeness, servicing, originality, demand and the quality of the selling channel. A watch with its original accessories and clear documentation may command stronger buyer confidence, but those details must be assessed for the specific example rather than assumed from the reference alone.
At £26,995.00, this watch represents a significant investment in one of Audemars Piguet’s most recognisable contemporary sports-watch families. Its value lies not only in the brand name, but in the combination of design originality, mechanical watchmaking and practical dive-watch functionality. Collectors should consider both present enjoyment and long-term condition when evaluating the purchase.
Authenticity, condition and servicing
Authenticity is central to any pre-owned Audemars Piguet purchase. A proper assessment should consider the case, bezel, crown, dial, hands, movement, strap and finishing as a complete system. Reference details should correspond with the watch’s construction, while the quality of machining, engravings and finishing should meet the high standards expected of the manufacture.
Condition is equally important. Stainless steel can show scratches or signs of polishing, rubber straps can exhibit wear from use, and luminous materials may develop subtle changes over time. These points should be evaluated carefully rather than described generically. The condition of this individual watch should be confirmed through the supplied listing information and direct inspection before purchase.
A mechanical dive watch also benefits from responsible servicing. Seals, crowns and pressure resistance can deteriorate even when a watch appears visually excellent, so water resistance should not be relied upon without appropriate testing. A service may involve movement inspection, regulation, replacement of worn components and renewal of water-resistance seals, depending on the findings of the watchmaker.
Prospective buyers should also ask about the watch’s included accessories, available paperwork and any documented service history. We do not add unverified provenance or technical claims to a pre-owned watch. Instead, the relevant details should be assessed transparently so the buyer can make an informed decision based on the actual example offered.
Buying this watch from us
Buying a pre-owned Audemars Piguet should feel as considered as buying new. This Royal Oak Offshore Diver is offered at £26,995.00 and is presented for buyers who value specialist knowledge, careful description and confidence in the transaction. The reference number is 15720ST.OO.A052CA.01, and the principal specification includes its stainless-steel 42mm case, khaki dial, luminous display and rubber strap.
Our approach is designed to help you understand what you are buying before committing. We focus on the watch’s reference, design, technical configuration and visible condition, while avoiding assumptions about serial numbers, provenance, guarantees or servicing that have not been supplied. If you are comparing this model with other dive watches, the Offshore Diver’s combination of high horology and practical underwater design makes it a particularly distinctive choice.
The watch may also appeal to collectors building a wider Audemars Piguet sports-watch collection. Its diver configuration offers a different personality from the chronograph format, including the Audemars Piguet Royal Oak Offshore Chronograph, with a more pared-back dial and a stronger emphasis on elapsed-time readability.
Before purchase, we recommend reviewing the specification, asking any questions about condition or accessories and considering how the 42mm case will suit your wrist. A luxury pre-owned watch is a long-term purchase, and the right example should satisfy both technically and emotionally. This Royal Oak Offshore Diver offers a robust, expressive and highly recognisable way into one of modern watchmaking’s most influential sports-watch designs.
Frequently asked questions
What is the reference number of this Audemars Piguet Royal Oak Offshore Diver?
The reference number is 15720ST.OO.A052CA.01. It identifies this stainless-steel Royal Oak Offshore Diver with its khaki dial and rubber-strap configuration.
What size is the case?
The case measures 42mm in diameter. Its substantial Offshore construction gives it a confident wrist presence, so it is advisable to consider both diameter and case profile when assessing fit.
What colour is the dial?
The dial is khaki, a muted green shade with a military-inspired character. It is paired with luminous hands and hour markers to support clear reading in low-light conditions.
Is this watch suitable for diving?
The model is designed as a dive watch and includes an internal rotating diving scale. However, water resistance is dependent on the current condition of the seals and case, so the watch should be pressure-tested by a qualified professional before underwater use.
What strap does the watch have?
This Royal Oak Offshore Diver is fitted with a rubber strap. Rubber is well suited to the model’s sporting purpose, offering flexibility and resistance to the conditions associated with active and aquatic wear.
How much does this watch cost?
The listed price is £26,995.00. Pre-owned value can be affected by condition, accessories, servicing and other details specific to the individual watch, so these should be reviewed before purchase.




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