This replica Royal Oak Offshore 26470ST 42mm takes the 26470ST.OO.A027CA.01 reference and pairs it with a blue rubber strap, shifting the character away from the leather-strapped variants within the same family. Audemars Piguet kept the stainless steel case at 42mm and gave this version a blue dial with contrasting sub-registers. The rubber strap adds water resistance practicality that leather straps cannot offer, making this the more sport-oriented take on the 26470 platform.

Case & Movement Specs

• Case diameter: 42mm
• Case material: stainless steel
• Bezel: stainless steel octagonal with eight hex screws
• Dial: blue with contrasting sub-registers
• Crystal: sapphire with anti-reflective coating
• Strap: blue rubber with steel folding clasp
• Movement: automatic chronograph
• Functions: hours, minutes, small seconds, chronograph, date

The blue dial paired with a matching blue rubber strap creates tonal continuity that extends from the wrist to the watch face. This monochromatic approach is something AP has refined across multiple collections, and the Offshore carries it with particular confidence given the case size.

Caliber Breakdown

Inside this reference sits a self-winding chronograph caliber driving the three sub-dials at 12, 6, and 9 o’clock. The date window at 3 o’clock uses a white surround for legibility against the blue background. Compared to the 44mm Offshore chronographs, this 42mm case sits closer to the wrist contour and tucks more easily under a cuff. The rubber strap makes it a watch you can take from a boat deck to a dinner table without swapping anything. See the Forest Green 6405CE at 44mm for the full-size ceramic alternative, and explore the Offshore collection to compare rubber versus leather options across references.

How It Compares

Within the 26470 family, strap choice defines the personality more than any other variable. The leather version reads dressy and vintage-influenced. This rubber version reads sporty and modern. Same case, same movement, same 42mm diameter, but a fundamentally different impression on the wrist. The blue-on-blue coordination adds a cohesive look that the multi-material configurations lack. For anyone choosing between 26470ST variants, strap material is the deciding factor. This replica Royal Oak Offshore 26470ST 42mm puts the sport-forward version of that decision into focus.