The short answer
On a replica Breguet, "mechanical" should mean the watch runs on a wound mainspring instead of a battery. Most replicas in the $150 to $600 range use Asian automatics: a Seagull ST21 or ST25, a Hangzhou 6-series, or a clone built on the ETA 2824/2892 pattern. Replicas with a working tourbillon use Chinese-made tourbillon calibres and rarely start below $800. If a listing calls a $60 watch mechanical, assume it is quartz until a photo of the movement proves otherwise. Movement first, case second, dial third. Everything else is trim.
Why the movement decides everything
Breguet earned its reputation on mechanics. Abraham-Louis Breguet opened his workshop in Paris in 1775 and patented the tourbillon in 1801. The house look follows the engineering: engine-turned guilloché dials, a fluted caseband, hollow moon-tip pomme hands, welded lugs. A replica can copy the outside and still hide a battery inside.
A mechanical movement also gives you something to grade. You can measure rate, amplitude, and beat error. You can regulate it. You can hear the beat. A quartz fake gives you none of that.
Movement tiers, and what they cost
Entry automatics, roughly $150 to $300
- Seagull ST21 (an ETA 2824-2 pattern) or Seagull ST25
- Hangzhou and Mingzhu autos, plus the very common DG2813
- The DG2813 beats at 21,600 vph with 21 jewels. It works, but it sits at the bottom rung.
- Finishing is plain: bare rotor, undecorated bridges, no perlage
Mid tier, roughly $300 to $600
- Better 2824 or 2892 clones, sometimes with a decorated rotor and Geneva stripes
- 28,800 vph, tighter tolerances, easier to regulate
- This is where a Breguet Classique or Marine replica starts to look right on the wrist
Tourbillon replicas, $800 and up
- Chinese tourbillon calibres, usually Seagull or Liaoning
- Real cages that rotate once per minute, visible through an aperture
- Heavier, thicker, and far more expensive to service
What to inspect before you pay
- Ask for a timegrapher photo. Rate within plus or minus 10 seconds a day, amplitude above 250 degrees, beat error under 0.5 ms.
- Confirm the beat rate. 28,800 vph reads as a fast, smooth sweep. 21,600 is visibly slower.
- Look at the guilloché. Stamped patterns have flat, shallow lines. Engine-turned or milled patterns catch light in a wave.
- Check the caseband fluting and the lug shape. Welded lugs curve into the case, not bolted on.
- Ask about hand finishing. Blued steel hands, not painted blue.
- Wind the crown on video if you can. Gritty or loose winding means cheap keyless works.
- Ignore water resistance claims unless there is a pressure test. 30m and 50m labels on replicas are marketing.
What you give up
No real warranty. No parts interchange with genuine Breguet, so a watchmaker services it as an orphan movement. Gaskets, crowns, and crystals become a scavenger hunt. Resale is near zero.
Then there is the legal side. Trafficking in counterfeit goods is a federal crime in the US, and Customs and Border Protection seizes counterfeit shipments at the border. Importing a counterfeit watch is prohibited, personal use included. Payment processors drop replica sites without warning, which is why the same storefront rarely stays up for long.
Six questions for any seller
- Which movement, and can you show it running on a timegrapher?
- Is the caseback exhibition or solid, and what is engraved on it?
- What is the actual case diameter and thickness?
- Do you accept a return if the movement is not as described?
- How do you ship, and who eats the loss if customs seizes it?
- Can you send a short video of the second hand sweeping and the crown winding?
Bottom line
Treat "mechanical" as a claim to verify, not a feature to trust. Verify the calibre, the beat rate, and the finishing. Know the price band each movement belongs in. Know the legal and service risk before you spend. Do that and you avoid most of the junk, which is the only real win available in this market.