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The Encyclopedia of Horology

Glossary · Trade

Complication

Any function added to a watch beyond basic timekeeping, such as striking, calendar or chronograph work.

Explanation

A complication is any watch function beyond displaying hours, minutes and seconds: striking, calendars, chronographs, alarms, moonphases and so on. 'Grand complications' combine several, traditionally a repeating mechanism, a chronograph and a perpetual calendar. Each complication adds parts, cost and fragility, and complicates servicing.

In the object catalogue

Catalogued objects whose own source record mentions “Complication”. The quoted line shows where; it is the seller’s or museum’s wording, not independent verification.