The Audemars Piguet Royal Oak Offshore Chronograph reference 25940OK.OO.D002CA.01.A, often referred to as the Rubberclad, is a significant 42mm luxury sports watch that features an 18k rose gold case. This model is distinguished by its black rubber-coated octagonal bezel, which is secured by eight hexagonal steel screws, and a matching black rubber strap with a rose gold deployment clasp. The timepiece utilizes a grey Méga Tapisserie dial adorned with luminous Arabic numerals and hands, providing high legibility against the textured background. It is powered by the Audemars Piguet Calibre 2326/2840 automatic movement, which contains 50 jewels, beats at 28,800 vph, and offers a power reserve of approximately 38 to 40 hours.
In terms of complications, the watch is equipped with a high-performance chronograph system capable of measuring elapsed time via a large central seconds hand, a 30-minute counter at the 9 o’clock position, and a 12-hour counter at 6 o’clock. It also includes a small seconds sub-dial at 12 o’clock and a magnified date window at the 3 o’clock position. The construction ensures a water resistance of 100 meters, aided by a screw-in crown and rubber-clad push-pieces. A tachymeter scale is also integrated into the inner bezel ring to allow for speed calculations over a fixed distance.
General reviews of the 25940OK often emphasize its historical importance as the first luxury watch to utilize rubber as a primary aesthetic and functional component. Collectors frequently praise its bold, masculine proportions and the striking contrast between the warm rose gold and the matte black rubber. While the watch is lauded for its robust build and the high-quality JLC-based movement, some critics note that the rubber coating on the bezel can show signs of wear or peeling over many years of heavy use. Despite this, it remains a highly sought-after reference for those seeking a “Jumbo” sports watch that balances avant-garde materials with traditional precious metals.