Why this one
The case for this one.
- Perpetual calendar and moon phase in a 41mm steel case.
- Ice blue dial, four sub-registers, nothing lost to clutter.
- Calibre 5134 needs no correction until the year 2100.
The Royal Oak Perpetual Calendar packs a full calendar, leap year indication, and moon phase into a case that still reads as a sports watch, thanks to the calibre 5134's slim profile. The ice blue dial of this 26574ST organises four sub-registers without ever feeling busy. It is the complication AP does best, delivered in steel rather than the gold most manufacturers reserve for it.