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Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate

Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate Audemars Piguet Royal Oak Offshore Chronograph 44…

Reference 26400IO.OO.A004CA.01

Full watch configuration

Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate

$32,959.00 $36,200.00
Requested condition
Pre-Owned
Requested accessories
Full Set

By Audemars Piguet

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate

Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate

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Audemars Piguet Royal Oak Offshore Chronograph 44 mm 26400IO.OO.A004CA.01 Titanium Slate

Catalogue watch price: $32,959.00 USD

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The Audemars Piguet Royal Oak Offshore Chronograph reference 26400IO.OO.A004CA.01 is a pre-owned, certified authentic 44mm titanium chronograph featuring a striking slate dial with index markers and a matching titanium bezel. The watch is presented on a rubber strap, combining the lightweight resilience of titanium with sporty wearability for a bold, purposeful aesthetic.

Reference 26400IO.OO.A004CA.01 stands out for its imposing 44mm octagonal titanium case, screw-down crown, and the iconic Royal Oak Offshore design language that has defined high-horology sport watches since the 1990s. Contact Bizak & Co. today to purchase this exceptional timepiece or to learn more about our certified authentic Audemars Piguet inventory.

Compare it across every Royal Oak Offshore Chronograph reference we carry, or browse the full Audemars Piguet collection at Bizak & Co.

Buy this Royal Oak Offshore Chronograph, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

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The Audemars Piguet Royal Oak Offshore Chronograph reference 26400IO.OO.A004CA.01 represents one of the most compelling expressions of high-horology sport watchmaking available on the market today. This 44mm titanium chronograph pairs a slate dial with the unmistakable octagonal case architecture that has made the Royal Oak Offshore a cultural icon. For collectors and enthusiasts searching for a buy online experience backed by dealer expertise, this reference delivers on every level.

The Royal Oak Offshore was introduced in 1993 as a bold, oversized evolution of Gerald Genta's original 1972 Royal Oak design. Where the classic Royal Oak redefined luxury with its integrated bracelet and exposed hexagonal screws, the Offshore pushed that provocation further with a more muscular case, pronounced crown guards, and an uncompromising sport aesthetic. Reference 26400IO.OO.A004CA.01 belongs to a generation of Offshore chronographs that refined the formula with advanced lightweight materials and a coherent, monochromatic design language.

The 44mm octagonal case is crafted entirely in titanium, a material prized for its exceptional strength-to-weight ratio and hypoallergenic properties. The titanium bezel echoes the case material, creating a seamless, purposeful visual continuity. A screw-down crown ensures the watch is well-sealed against the elements, making it a robust companion for active lifestyles. The slate dial, dressed with clean index markers, offers a sophisticated dark tone that reads with depth and clarity under any lighting condition.

The rubber strap rounds out the sporty specification, providing comfort and durability on the wrist while complementing the industrial character of the titanium case. The overall package — lightweight frame, secure crown, resilient strap — makes reference 26400IO.OO.A004CA.01 one of the most wearable large-format luxury chronographs in the Audemars Piguet catalogue. Whether worn at the office or on an adventure, this watch adapts without compromise.

Powering the watch is an Audemars Piguet automatic movement with chronograph complication, delivering the in-house engineering credibility that collectors expect from one of the Holy Trinity of Swiss watchmaking. Audemars Piguet has manufactured movements in-house since the manufacture's founding in Le Brassus in 1875, and every caliber reflects generations of accumulated expertise in high-complication watchmaking.

Bizak & Co. sources pre-owned examples of this reference on request. Dealer availability, condition and final price are confirmed before purchase. Our team of specialists is available to answer every question, from provenance to delivery. If you are ready to buy this Audemars Piguet Royal Oak Offshore Chronograph online or wish to speak with an expert before committing, contact Bizak & Co. at bizakandco.com — we make acquiring a world-class timepiece straightforward, secure, and rewarding.

Technical Details
Reference
26400IO.OO.A004CA.01
Model
Royal Oak Offshore Chronograph
Movement
Automatic
Case material
Titanium
Bracelet material
Rubber
Dial
Slate with index markers
Case size
44mm
Requested condition
Pre-Owned
Requested accessories
Full Set
FAQ

1. What makes the Audemars Piguet Royal Oak Offshore Chronograph 26400IO.OO.A004CA.01 special?
Reference 26400IO.OO.A004CA.01 combines the legendary Royal Oak Offshore design — octagonal case, exposed screws, and integrated crown guards — with a full titanium construction and a sophisticated slate dial. The result is a 44mm chronograph that is simultaneously bold in presence and lighter on the wrist than a steel equivalent, making it one of the most distinctive sport-luxury timepieces available for sale today.

2. What movement powers the Royal Oak Offshore Chronograph ref. 26400IO.OO.A004CA.01?
This reference is powered by an Audemars Piguet automatic movement with integrated chronograph functionality, reflecting the manufacture's long heritage of in-house movement production dating back to 1875 in Le Brassus, Switzerland. The automatic winding mechanism ensures the watch keeps accurate time through the natural motion of the wearer's wrist.

3. What is the case size of this Royal Oak Offshore Chronograph?
The case measures 44mm in diameter, positioning it firmly in the oversized sport-watch category that the Royal Oak Offshore pioneered when it launched in 1993. The octagonal case shape and prominent crown guards add further visual mass, making this watch a statement piece on the wrist.

4. Is the Audemars Piguet Royal Oak Offshore 26400IO.OO.A004CA.01 suitable for everyday wear?
Yes — the titanium case and bezel make the watch notably lightweight for its 44mm dimensions, reducing fatigue during all-day wear, while the rubber strap adds comfort and resilience for an active lifestyle. The screw-down crown provides additional protection against moisture and dust, supporting reliable daily use.

5. What are the key dial and material details of this reference?
The dial is finished in slate with index hour markers, offering a dark, refined tone that suits both casual and dressed-up occasions. The case and bezel are both crafted in titanium, a high-grade material valued for its strength, low density, and hypoallergenic qualities that make it ideal for prolonged skin contact.

6. Is the 26400IO.OO.A004CA.01 a good buy, and how can I purchase it from Bizak & Co.?
This reference is one of Audemars Piguet's most iconic sport chronographs. Bizak & Co. sources pre-owned examples on request. Dealer availability, condition and final price are confirmed before purchase.

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90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

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U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

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