Why Mechanical Watch Date-Setting Restrictions Vary by Calibre

First reported

ORELO · 28 Oct 2026, 03:36 UTC

Found by WristBible

28 Oct 2026, 04:00 UTC

Sources

1

Mechanical watch manufacturers specify calibre-dependent nighttime periods when quickset date adjustment should be avoided. Using the quickset while the calendar mechanism is engaged can damage the date disc or its driving finger. Seiko’s manuals for calibres 4R35 and 4R36 warn that improper adjustment can prevent the next day’s date change or damage the mechanism.

Summary written by WristBible's AI editor from the publishers' reporting (originally in Spanish).

Not stated in the sources: Specific restricted date-setting hours for the cited calibres not stated

Coverage

• ORELOCómo ajustar la fecha de un reloj mecánico sin dañar el calendario(ES)28 Oct 2026, 03:36 UTC