Short answer
No Speedmaster Professional Moonwatch carries a perpetual calendar. Omega built perpetual calendar Speedmasters as separate references, starting with the Speedmaster Perpetual Calendar in 1996 on calibre 3200. Replicas sold under the "Speedmaster Pro perpetual calendar" name copy the Moonwatch case and dial, then add day, date, month and moon phase subdials. Almost none of them run a real perpetual calendar. Most use a standard chronograph movement with a 31-day calendar plate, or subdials that never move.
What the real watch does
A perpetual calendar tracks 28, 29, 30 and 31-day months plus the leap year cycle. The dial shows day, date, month and leap year, with a moon phase on some versions. Omega's 1996 Speedmaster Perpetual Calendar used calibre 3200. Later Broad Arrow versions used a different base calibre. Both are mechanical and need correction once per century.
How the replicas differ
- Movement: Asia 7750 chronograph with a bolt-on calendar plate, or a quartz module. Neither holds a four-year leap cycle.
- Subdials: day, month and leap year markers on many replicas are printed and static.
- Case: 42 mm Moonwatch profile, sapphire or mineral glass, 20 mm lug width.
- Weight: 140 g to 170 g on a steel bracelet, close to the genuine 42 mm case.
Test before you pay
- Set the date to Feb 28 in a non-leap year, then advance the hands past midnight. A perpetual calendar jumps to Mar 1. A 31-day module jumps to Feb 29.
- Check the leap year subdial. It moves once per four-year cycle.
- Ask for the movement name. "Asia 7750" or "ETA 7750" means no perpetual calendar.
Replica sellers do not publish production numbers or module specs. Ask for a video of the February rollover. A seller who cannot supply one is selling a dial, not a calendar.