Most people arrive knowing the shape of what they want before they know the brand: a second time zone, a disc of cities, a moon over the six. Each style below has two doors. One opens onto every reference in the catalog that carries it. The other explains what the mechanism is, where it came from, and how it actually works.
A rotating disc showing two moon images passes behind an arched aperture in the dial, displaying the waxing and waning of the moon in sync with the 29.5-day lunar cycle.
Ordered by how much of the catalog carries each one. A complication only appears here once it has both references to show and an explainer written for it.
A 31-position disc driven by a 24-hour cam shows the current date through an aperture in the dial; accurate for 30- and 31-day months, but requiring manual correction after shorter months.
A chronograph adds an independent seconds-measuring hand operated by pushers on the case, enabling the watch to function as a stopwatch without disturbing the timekeeping function.
A power reserve indicator shows how many hours remain before the mainspring runs down, reading from full to empty over the movement's rated running time.
The tourbillon mounts the escapement and balance wheel in a rotating cage that completes one revolution per minute, originally to average out the effects of gravity on a stationary pocket watch.
A perpetual calendar automatically accounts for all month lengths and leap years in the Gregorian calendar without requiring any correction until March 1, 2100.
Skeletonising removes material from movement bridges and plates to make the mechanism visible, turning the movement interior into the primary aesthetic element of the watch.
A mechanical alarm complication adds a second independent mainspring and strike train that triggers a hammer against a gong or caseback at a preset time.
On demand, a minute repeater chimes the current time in a sequence of tones: low strikes for hours, combined strikes for quarter-hours, high strikes for the remaining minutes.
A retrograde display sweeps a hand across an arc for the full period of the display and then snaps it back to its starting position instantly, beginning the cycle again.
An instantaneous-jumping hour display stores energy over the course of an hour and releases it in a single snapping motion, advancing a numeral disc one position at the exact hour.
