The Audemars Piguet Royal Oak Offshore Chronograph Ref. 26170ST is a bold and dynamic expression of the iconic collection, distinguished by its striking black “Méga Tapisserie” dial energized with vibrant orange accents on the tachymeter scale, Arabic numerals, and hands, a combination that has earned it the enduring nickname “Volcano” among collectors . This commanding 42mm stainless steel timepiece houses the robust in-house automatic Caliber 3126/3840, a chronograph movement built on the legendary Caliber 3120 with a Dubois-Depraz module, delivering a 50-hour power reserve and visible through the sapphire crystal caseback . The watch’s high-contrast aesthetic is further enhanced by a sporty black rubber strap that complements the case’s signature octagonal bezel secured by eight hexagonal screws, while the black rubber-clad crown and pushers add to its technical, off-road-inspired character . With its 100-meter water resistance, practical date function at 3 o’clock, and the unmistakable presence of the Offshore line’s 42mm case, this reference represents the perfect fusion of avant-garde design and mechanical sophistication, making it an essential statement piece for collectors who appreciate bold, high-contrast luxury sports watches . Key specifications: 42mm stainless steel case; black “Méga Tapisserie” dial with orange accents; Caliber 3126/3840 automatic chronograph; 50-hour power reserve; black rubber strap; 100m water resistance; sapphire crystal front and exhibition back.