The short answer
Most replica Breguet complications fall into three groups. The tourbillon and the chronograph can be made to work, because cheap functional versions of both exist. The moonphase, power reserve, and big date range from honest to decorative depending on the base movement. The minute repeater, perpetual calendar, and equation of time are almost always cosmetic in a replica, no matter what the listing claims. If a working complication matters to you, spend your money in the first group.
Complications that hold up
Tourbillon
This is the one people ask about most, and it is also the one where replicas surprise people. Chinese factories have been building real rotating escapements for years, so a replica Breguet Classique Tourbillon can have an actual cage turning once a minute. Look at the balance through the dial aperture for a full minute. If the cage stops and restarts, or if the balance sits fixed under a spinning decorative plate, it is a fake tourbillon, sometimes called an open-heart or a flying-wheel design.
Chronograph
Breguet's Type XX and Type XXI lines translate well. The common base is a Seagull ST19 column-wheel movement, a licensed descendant of a vintage Venus design. Pushers feel crisp, the reset snaps back to zero, and the subdial hands move smoothly. Ask whether the chronograph is modular or integrated. Integrated is cleaner, thinner, and less likely to develop a lazy reset.
Moonphase and power reserve
A true moonphase runs on a 59-tooth disc and drifts about one day every two and a half years. Many replicas use a 24-hour day and night disc instead, which looks right at a glance and wrong within a week. Power reserve indicators are sometimes real and sometimes tied to nothing at all. Watch the hand while you wind. If it does not climb, it is decoration.
Complications that rarely work
- Minute repeater. A real repeater has hundreds of parts, two gongs, and rack-and-snail chime programming. Replicas with a repeater slider usually produce a single dull click or nothing.
- Perpetual calendar. The real thing knows leap years. Replicas typically show day, date, and month windows driven by an ordinary calendar wheel, which means you correct it in February like any cheap watch.
- Equation of time and running equation. Almost always a printed or painted indication.
- Double tourbillon, such as the Classique 5347 style. Two cages at that price point is a graphics exercise, not a mechanism.
Movement families worth knowing
Seagull supplies most of the tourbillon and chronograph bases used in replica Breguet. Hangzhou and Shanghai movements show up in thinner dress models. Miyota and ETA clones appear in entry-level pieces and keep better time than most people expect, but they have no complication architecture to speak of. When a seller cannot name the base caliber, assume the movement is generic and the complication is a print.
Dial and case details that separate good from bad
Breguet is a finishing brand more than a feature brand, so the small things matter more here than on a diver.
- Guilloche. Real engine-turned patterns have crisp, continuous lines with no pixelation. Printed copies blur under a loupe.
- Breguet hands. The pomme hands should be blued steel or a convincing heat-blue finish, with a hollow eccentric moon tip on the seconds hand.
- Fluted caseband. The coin-edge fluting should be evenly spaced and machine-cut, not soft and rounded.
- Secret signature. Many Breguet dials carry an engraved signature in the enamel or metal. In replicas it is usually etched or absent.
- Numerals. Breguet numerals are distinctive and slightly irregular. Generic block numerals instantly read as a copy.
What I check before buying
- Ask for a video of the complication running, not a photo.
- Confirm the base caliber by name and reference number.
- Check the case diameter and thickness against the genuine reference. Replica complications often run 1 to 2 mm thicker.
- Verify the crown functions separately from the pushers and that the date changes at midnight, not noon.
- Confirm the return window. Complications are where quality control failures show up first.
A replica Breguet with a working tourbillon or chronograph is a reasonable buy at the right price. A replica with a printed perpetual calendar or a silent repeater is a costume piece, and it should be priced like one.