AP redesigned the Royal Oak chronograph for the 26240 generation and the white dial version might be the best argument for the update. The Cal. 4401 brought flyback functionality and a 70-hour reserve into a case that is barely thicker than the old 26331. This replica royal oak 26240ST white is the modern chrono Royal Oak distilled to its cleanest expression.
The Flyback Advantage in Real Use
Most people will never use flyback timing. But the ones who do — pilots, rally enthusiasts, anyone timing consecutive intervals — will never go back. Instead of stop-reset-start, you press once and the chrono hand snaps back to zero and immediately starts again. It shaves seconds off the process and feels genuinely mechanical in a satisfying way.
The white Grande Tapisserie dial with contrasting sub-dials is easier to read at speed than you might expect. The registers are not recessed as deeply as on the 26331, so they catch light more evenly. Quick glance legibility was clearly a priority in the redesign.
Set next to the blue 26240ST, the white version feels lighter and more open. The blue leans sporty. The white leans refined. Both wear identically on the wrist — the difference is purely aesthetic and comes down to what you wear more often.
Bracelet Fit and Daily Wearability at 12.4mm
A 12.4mm chronograph on an integrated bracelet sounds thick on paper. On the wrist, the 26240 manages its height well because AP tapered the case sides aggressively. The lugs curve down toward the wrist rather than sitting flat, which helps with comfort on smaller wrists too. If you wear anything from 17 to 20cm, this watch will sit properly.
The new-generation bracelet on the 26240 uses a different link construction than the 26331. Micro-adjustment is easier and the clasp sits flatter against the underside of your wrist. These are small refinements that add up over a full day of wear.
The Cal. 4401 is visible through the sapphire caseback. The rotor and bridge finishing are noticeably improved over the 2385 in the previous generation. Seventy hours of reserve means weekend gaps are a non-issue. This replica royal oak 26240ST white belongs in the conversation for best all-around Royal Oak chronograph currently available. Reach out via our contact page for any questions. See the complete Royal Oak lineup for all current references.
| Reference | 26240ST.OO.1320ST.07 |
| Case | 41mm · stainless steel |
| Bezel | Octagonal · 8 hexagonal screws |
| Dial | White · Grande Tapisserie · contrasting sub-dials |
| Crystal | Sapphire · AR coating |
| Caliber | 4401 · automatic flyback chrono · 70h reserve |
| Bracelet | Stainless steel · AP-link integrated |
| Buckle | Steel · AP folding clasp |
| Water | 50m / 5 ATM |
| Functions | Hours, minutes, seconds, flyback chronograph, date |
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