Nautilus Annual Calendar 5726/1A
A steel Nautilus with an annual calendar, moon phases and a 24-hour display.
The 5726/1A is a steel Nautilus with an annual calendar. Day, date and month show in apertures, and the calendar needs correcting only once a year, at the end of February.
It also has a moon-phase display and a 24-hour indication. The blue dial follows the horizontal embossing of the 1976 original, with a rim that fades to black.
The case is 40.5 mm across and 11.3 mm thick. The movement is the self-winding calibre 26-330 S QA LU 24H.
- Reference
- 5726/1A-014
- Introduced
- 1976 (Nautilus)
- Case
- 40.5 mm (10–4 o’clock), 11.3 mm thick, steel
- Movement
- Calibre 26-330 S QA LU 24H, self-winding
- Power reserve
- 35–45 hours
- Functions
- Hours, minutes, sweep seconds, annual calendar, moon phases, 24-hour indication
- Notable
- Annual calendar in a steel Nautilus
