Complication
A complication is the umbrella term for any watch function beyond plain hours, minutes and seconds. A date, chronograph, GMT, moonphase or power reserve are the common examples. Each one adds usefulness, but also makes the movement more complex and raises the price.
At a glance
- Common complications
- Date, chronograph, GMT, moonphase, power reserve
- Trade-off
- More function, more complex movement, higher price
The one job every watch is built to do is tell the time. Anything past that, whether a date window or a stopwatch function, is a separate mechanism added to the movement, and it makes the watch harder to build.
Simple versus grand complications
In practice there are two ends of a spectrum. A date complication or a power reserve indicator is common on everyday watches and adds little complexity. Grand complications combine several demanding functions in one movement and belong to the upper reaches of fine watchmaking.
- Genuinely useful day to day: date, GMT, power reserve
- More about pleasure: moonphase, chronograph
Which ones earn their place
Not every complication suits every wrist. A GMT pays off if you travel, a date pays off if you use it, while a moonphase is mostly an aesthetic pleasure. You can browse the rest of the family in the complications category, and for affordable real-world examples, see our guide to the best Japanese watches.
Examples
A chronograph adds a separate stopwatch function alongside the running time display, and it is one of the most common complications on an everyday watch.
View this watchA GMT shows a second time zone on the same dial, a real convenience for frequent travelers.
View this watch
Comparison
It helps to think of complications on two different levels.
| Option A | Option B | Notes |
|---|---|---|
| Simple complication | Grand complication | A single function like a date or GMT adds little load to the movement; a grand complication combines several demanding functions in one movement and raises the price sharply. |
Related terms
Watches that show this
Frequently asked questions
What does complication mean on a watch?
A complication is any watch function beyond plain hours, minutes and seconds. A date, chronograph, GMT, moonphase or power reserve are the best-known examples. Each one adds usefulness, but it also makes the movement more complex and raises the price.
What is the difference between a simple and a grand complication?
A simple complication is a single added function like a date or GMT, and it adds little load to the movement. A grand complication combines several demanding functions in one movement, is far harder to build and usually belongs to fine watchmaking.
Which complications are genuinely useful on an everyday watch?
The most useful day to day are the date, GMT and power reserve: you read the date constantly, a GMT gives a second time zone when you travel, and a power reserve shows when the watch will stop. A moonphase is mostly an aesthetic pleasure.