Side-by-side comparison of a genuine Rolex Submariner and a super clone replica under identical lighting

Fake Rolex vs Real — Can You Actually Tell?

Someone is selling you a Rolex. Maybe online, maybe in person. You look at it — the dial is clean, the weight feels right, the crown screws down tight. Everything checks out.

Or does it?

I have spent years looking at these watches side by side — genuine and replica, under magnification, on the wrist, on the bench. And I will tell you something most guides won't: the line between real and fake has become incredibly thin. 3D printing, CNC machining, and cloned movements have changed everything.

A few things to know before we go model by model:

  • Not every replica is easy to spot. The cheap ones with misspelled dials and quartz movements take two seconds. But a super clone using 904L steel, a ceramic bezel, and a cloned caliber movement? Even experienced dealers have been caught off guard.
  • Every model has its own weak points. A check that matters on a Day-Date (weight, gold purity) is irrelevant on a steel Submariner. That is why the generic “6 things to look for” approach falls short.
  • I am going to be direct with you throughout this page. No hedging, no marketing speak. Just the checkpoints, model by model — the same way you would actually encounter it.

Let's get into it.

Jump to your model ↓

Quick Universal Checks

Before we get into model-specific details, these three checks apply to every Rolex, regardless of model.

Weight — The First Thing You Pick Up On

Pick it up. A genuine Rolex feels dense — that is the 904L Oystersteel (or precious metal, depending on the model). Budget replicas using lighter 316L steel or hollow links feel noticeably lighter. A genuine steel Submariner weighs around 155 grams. A genuine gold Day-Date can exceed 200 grams.

High-end super clones have closed this gap significantly — many now use 904L steel and solid links, matching the genuine weight within a few grams. But on gold and two-tone models, weight becomes critical for a different reason (more on that in the Datejust and Day-Date sections).

The Movement — Where the Truth Lives

If you can only check one thing, check the movement. Everything else — dial, bezel, bracelet — can be replicated to near-perfection visually. But open the case back, and the truth is right there.

Genuine Rolex movements (caliber 3235, 3285, 4130, and others) feature precise circular graining, polished beveling on every bridge, and a free-sprung balance with Parachrom Bleu hairspring. Even the best cloned movements lack the finishing depth. The beveling is less refined. The graining is shallower.

Important: Opening a case back requires proper tools and should be done by someone who knows what they are doing. But this is where the truth lives — always.

Crown, Dial Text & Rehaut

Five quick visual checks you can do without any tools:

  • Dial text — Look at “Superlative Chronometer Officially Certified” at the 6 o'clock position. On a genuine Rolex, every letter is razor-sharp. On many replicas, the edges show slight bleeding, especially on thinner text like “Oyster Perpetual.”
  • Rehaut engraving — Since 2007, all Rolex models (except Cellini) have “ROLEXROLEXROLEX” laser-engraved on the inner bezel ring. Genuine engraving is perfectly consistent. Replicas often show uneven spacing or shallow printing.
  • Crown logo — The Rolex coronet has specific proportions. Many replicas get it slightly too thick or too thin. At a glance it looks fine, but compare it to a photo of the genuine article and you might notice the difference.
  • Laser-etched crown on crystal — Starting in 2002, Rolex micro-etches a tiny coronet at the 6 o'clock position on the crystal. It is made up of roughly 100 tiny dots and is nearly invisible to the naked eye. Here is the counterintuitive part: if you can see it clearly in photos, that is actually a red flag. On genuine Rolex, it is extremely subtle. Many replicas make it too visible.
  • Case back — Genuine Rolex watches (with very rare exceptions in the Cellini line) have smooth, unmarked case backs. No exhibition window, no engravings, no logos on the back. If you can see through the back or find decorative engravings, it is almost certainly not genuine.
Universal Rolex authentication checks showing dial text, rehaut engraving, crown logo, laser-etched coronet, and case back comparison between genuine and replica

Quick Reference — What to Check by Model

Not everyone needs to read the full breakdown. If you know what model you are looking at, here is your cheat sheet — the priority checks for each one, in order.

Someone is selling you a… Check these first Then verify
Datejust (steel) Cyclops magnification (2.5x), dial text sharpness, end-link fit Movement — caliber 3235
Datejust (gold / two-tone) Weight first → gold hallmarks (750 stamp) Gold purity test (acid or XRF) → Movement
Submariner Bezel fill (platinum sheen vs flat paint), lume color (blue vs green) Bezel action (120 clicks) → Movement — caliber 3235
GMT-Master II GMT function test (does the GMT hand move independently?), bezel color transition Crown positions (4 distinct) → Movement — caliber 3285
Daytona Chronograph start sound (listen for the click), subdial function (all 3 working) Pusher feel → Movement — caliber 4130
Day-Date Weight first (200g+ for gold), gold hallmarks (750 or 950) Gold purity test (acid or XRF) → Movement — caliber 3255

Want the full walkthrough? Keep reading — each model gets its own section below.

Someone Is Selling You a Datejust — Here's What to Check

OK, let's get started. Someone is selling you a Datejust.

The Datejust is where Rolex's identity began — introduced in 1945, it was the first self-winding wristwatch with a date display and the now-iconic Cyclops lens. It remains one of Rolex's best-selling models and, unsurprisingly, one of the most replicated.

Here is what matters.

Standard Steel Datejust

On a steel Datejust (reference 126234 or 126200), your primary checks are visual.

Cyclops lens: The magnification is your fastest tell. Genuine Rolex Cyclops magnifies the date exactly 2.5 times — the date fills nearly the entire window and is perfectly centered. Replicas often land at 1.5 to 2x, making the date appear smaller within the window. High-end super clones have improved here, but many still fall short.

Anti-reflective coating: Since 2005, Rolex applies an AR coating on the underside of the crystal. The genuine crystal appears nearly invisible when viewed at an angle — the dial is clear and readable. Replicas sometimes show visible reflections or a faint purple tint from lower-quality coating.

Bracelet (Jubilee or Oyster): Run your fingers along the links. Genuine Rolex bracelets feel silky smooth — every edge is finished. Replicas can have slightly rough or sharp edges. Also check the end-links where the bracelet meets the case: on a genuine Rolex, these sit perfectly flush with no gaps. Even slight movement is a flag.

Rolex Datejust Cyclops lens comparison showing 2.5x magnification on genuine versus reduced magnification on replica

Two-Tone or Full Gold Datejust — Check the Weight First

This is where things change. If someone is selling you a two-tone or full gold Datejust, your very first step is different from steel: check the weight.

Here is why. Super clones in this segment use high-quality base metals that feel similar to the genuine article — the density and heft are close. But the gold is not real. They plate or coat the metal to look like gold, whether it is the two-tone combination or a full gold case and bracelet.

So you pick it up, and the weight feels right. That is by design — the base metal is chosen specifically to mimic the weight of precious metal. But real 18k gold and gold-plated steel are fundamentally different materials.

What to do:

  1. Weigh it precisely — use a jeweler's scale. A genuine full gold Datejust 36mm weighs significantly more than a steel model. Compare the number against Rolex's published specifications.
  2. Check the gold hallmarks — genuine Rolex precious metal watches are stamped with gold purity marks (750 for 18k).
  3. Test the gold itself — acid test or XRF testing will confirm whether the gold is real 18k or plated. A jeweler can do this in minutes.

There are also replica gold bracelets on the market that match the weight closely — they use heavy alloys underneath the plating. Even if the scale reads right, the gold purity test is your confirmation.

After the weight check, proceed with the standard visual checks — Cyclops, dial text, bracelet finishing. But weight and gold verification come first on any precious metal model.

The Movement — Is It Still Original?

This applies to all Datejust variants, and it is important enough to call out here (we cover it in depth in the Movement Swap section below).

A Datejust should house a caliber 3235 (current generation) or 3135 (previous). If you can get the case back opened, look at the movement. Is it the right caliber? Does it match what should be inside this reference number?

Movement swaps happen more often than you think — especially on popular models where the genuine movement alone is worth thousands. More on that later.

Submariner — The Most Replicated Watch in the World

There is no watch on earth more copied than the Submariner. Since 1953, when Rolex introduced it as one of the first purpose-built dive watches, it has become the single most recognizable timepiece ever made. Which also makes it the most faked.

The current reference 126610LN has been on the market since 2020, and the replica market caught up fast.

Bezel, Dial & Bracelet

Ceramic bezel: Rolex uses Cerachrom ceramic — the numbers and markers are filled with platinum through PVD deposition. Under light, genuine platinum fill has a distinctive metallic sheen. Replica bezels use paint, which appears flat and duller. Tilt the watch under a light source and compare.

Bezel action: A genuine Submariner bezel has 120 clicks per rotation — each click is precise and even. Budget replicas feel loose or inconsistent. Super clones have improved significantly here, but there is often still a slight difference in the crispness of each click.

Dial: The Submariner dial is relatively simple — black with luminous markers. Check the printing quality (as discussed in Universal Checks), the alignment of the hour markers, and the lume. Rolex uses Chromalight, which glows blue and lasts 8+ hours. Many replicas use older-generation lume that glows green and fades faster.

Bracelet: The Oyster bracelet on a genuine Submariner is a solid piece of engineering. Check the end-links for flush fit, the clasp mechanism (Oysterlock with Glidelock extension), and the overall finishing of the links.

Rolex Submariner ceramic bezel comparison showing platinum fill on genuine versus paint on replica

Movement Verification

The current Submariner houses the caliber 3235 — Rolex's latest-generation movement with a 70-hour power reserve. Previous models used the 3135 or 3130.

If you can inspect the movement, look for:

  • Rotor engraving — “ROLEX” with specific surface finishing
  • Circular graining on the main plate — deep and consistent on genuine, shallow on clones
  • Free-sprung balance with Parachrom Bleu hairspring — replicas use a regulated balance, which is visually distinct

On the Submariner specifically, the movement is often the most reliable way to confirm authenticity — because the external elements (bezel, dial, bracelet) on high-end super clones are now extremely close to genuine.

GMT-Master II — Does the GMT Function Actually Work?

The original GMT-Master was designed for Pan Am pilots in 1955 to track two time zones simultaneously. The GMT-Master II evolved from it in 1982, and today it is the version you will encounter — one of Rolex's most sought-after models — and the two-tone ceramic bezels (“Pepsi,” “Batman,” “Root Beer”) are among the most iconic watch designs in the world.

But here is something that most comparison guides miss entirely: not all replica GMT-Master IIs actually have a working GMT function.

Visual Checks

Bezel colors: On the “Pepsi” (red-blue), the transition between colors is precise and consistent on genuine. On replicas, the red can lean too orange, the blue too dark, or the transition point can shift. The “Batman” (blue-black) has a subtler transition that is actually harder to replicate accurately.

Bezel engraving and fill: Same principle as the Submariner — genuine uses platinum PVD fill with metallic sheen, replicas use paint.

24-hour markers: On the bezel, the triangle at 24 (or 12 on some references) and the numbering should be perfectly aligned with the dial markers. Misalignment is common on lower-tier replicas.

Rolex GMT-Master II Pepsi bezel color comparison between genuine and replica showing transition boundary

The GMT Function Test

This is the critical check that most guides skip.

On a genuine GMT-Master II, the GMT hand (the one with the arrow tip pointing to the 24-hour bezel) operates independently of the local time hands. You set it by pulling the crown to the second position and turning — the GMT hand jumps in one-hour increments while the hour and minute hands stay put.

On many replica GMT-Master IIs, the GMT hand does not move independently. It is connected to the hour hand and simply rotates at the same rate. It looks correct when the watch is running — you see a hand pointing to the 24-hour bezel — but try to adjust it independently and nothing happens, or the entire handset moves.

How to test:

  1. Unscrew the crown
  2. Pull to the second position (first click)
  3. Turn the crown — only the GMT hand should move in one-hour jumps
  4. The hour and minute hands should remain stationary

If the GMT hand cannot be set independently, the movement inside is not replicating the genuine caliber 3285 (or older 3186) function correctly. This is a dead giveaway — and one you can check without opening the case back.

Movement

The GMT-Master II uses caliber 3285 (current) or 3186 (previous). The GMT complication adds an additional gear train for the independent GMT hand. On genuine movements, this mechanism is precise — the GMT hand jumps cleanly, one hour at a time, with no play or wobble.

On replica movements that do replicate the GMT function, the jump can feel less precise — slightly sloppy or with a fractional misalignment. It works, but it does not feel the same.

Daytona — Listen to the Chronograph

The Cosmograph Daytona was born in 1963, named after the Daytona International Speedway. For decades it was a relatively niche racing chronograph. Then Paul Newman happened, and now it is arguably the most hyped watch on the planet, with waiting lists measured in years.

The Daytona brings something no other Rolex model does to the authentication conversation: sound.

Visual Checks

Tachymeter bezel: The Daytona's ceramic bezel is engraved with a tachymeter scale — numbers from 60 to 400 (or “UNITS PER HOUR” on some references). On genuine, the engraving is filled and perfectly legible. On replicas, the engraving may be too shallow, too deep, or unevenly filled.

Subdials: The Daytona has three subdials — running seconds at 6, chronograph minutes at 3, and chronograph hours at 9. All three should be functional. On some budget replicas, the subdials are decorative only — they do not actually measure anything. On high-end replicas they work, but the step of the chrono seconds hand can differ (smooth sweep vs slight stutter).

Pushers: Genuine Daytona pushers (at 2 o'clock and 4 o'clock) have a specific resistance and travel. They should feel firm, precise, and return to position cleanly. Replicas sometimes feel mushy or have inconsistent feedback.

Rolex Daytona dial and bezel comparison showing subdial detail and tachymeter engraving quality

Chronograph Function + the Start Sound

This is the Daytona-specific check that I always come back to.

When you press the top pusher to start the chronograph on a genuine Daytona, there is a distinctive click — a crisp, mechanical sound as the chronograph coupling engages. It is the sound of a column-wheel chronograph mechanism snapping into action. Rolex's caliber 4130 uses a vertical clutch and column wheel, which gives it that characteristic precise engagement.

On many replica Daytonas, even good ones, this sound is different. It might be softer, duller, or have a slight metallic ringing instead of a clean click. The internal architecture is different — replicas that use a modified Asian chronograph movement do not replicate the column-wheel mechanism exactly.

How to test:

  1. Make sure the chronograph is stopped (chrono seconds at 12)
  2. Press the top pusher (2 o'clock)
  3. Listen — you should hear a clean, sharp click
  4. The chrono seconds hand should start moving smoothly

This is not a 100% definitive test on its own — some high-end super clones have gotten close. But combined with the other checks, it adds confidence.

Movement — Caliber 4130

The caliber 4130 is Rolex's in-house chronograph movement, introduced in 2000. It replaced the Zenith El Primero-based caliber 4030 and is notable for its relative simplicity — fewer parts than most chronograph movements, which makes it more reliable.

Under inspection:

  • Column wheel — visible when the case back is opened, a star-shaped component that controls the chronograph engagement
  • Vertical clutch — provides instant chrono start without the hand stuttering
  • Parachrom hairspring — blue color, paramagnetic
  • Finishing — same standards as other Rolex calibers (circular graining, beveled edges)

Replica 4130 clones exist and have improved significantly. But the finishing differences remain, particularly around the column wheel and on the chronograph bridge beveling.

Day-Date — Pure Precious Metal, Pure Scrutiny

The Day-Date, introduced in 1956, holds a unique position: it is the only Rolex model available exclusively in precious metals — 18k yellow gold, white gold, Everose (rose gold), or 950 platinum. No steel version exists. This makes it the heaviest and most valuable standard Rolex model — and the authentication process starts differently here.

Weight Is Everything

I cannot stress this enough: on a Day-Date, weight is your first and most important check.

A genuine 18k yellow gold Day-Date 40 (reference 228238) weighs approximately 200+ grams. That weight comes from solid gold — not plated, not filled, not coated. The case, the bracelet, the clasp — all 18k gold.

Replica Day-Dates face a fundamental problem: gold is expensive. A super clone can match the visual appearance almost perfectly — the color, the finishing, the proportions — but using actual 18k gold for the entire watch would make the replica cost thousands. So they use gold-plated base metals.

Some high-end replicas use heavy alloys underneath the plating to approximate the weight. They can get close — close enough to feel “heavy” in a general sense. But a precise scale reading compared against Rolex's published specifications will reveal the difference.

What to do:

  1. Weigh the watch on a jeweler's scale (to the gram)
  2. Compare against the published specification for that exact reference
  3. If the weight is off by more than a few grams, investigate further

Gold Proof Verification

Even if the weight checks out, you need to verify the gold itself.

Why? Because there are replica bracelets and cases using heavy alloys plated with a gold layer. The weight can be similar to genuine, but the material is not 18k gold.

How to verify:

  • Hallmarks — Genuine Rolex precious metal watches are stamped “750” (indicating 18 karat / 75% gold content) inside the case and on the clasp. The stamping should be crisp and consistent with Rolex's style.
  • Acid test — A jeweler can apply nitric acid to a small, inconspicuous spot. 18k gold will not react. Plated metal will show a reaction as the acid reaches the base metal.
  • XRF testing — The most reliable method. An X-ray fluorescence analyzer reads the exact metal composition without damaging the watch. Any reputable jeweler or pawnshop has one.

For platinum Day-Dates (reference 228206), the check is similar — platinum is extremely dense (21.45 g/cm³ vs gold's 19.3 g/cm³) and carries a “950” hallmark. No replica has successfully matched platinum's density at an affordable price point.

Movement

The Day-Date 40 houses the caliber 3255 — similar to the 3235 in the Datejust but with the day complication added. The day wheel displays the full day name (MONDAY, TUESDAY, etc.) in one of 26 available languages.

Check that the day change happens cleanly around midnight — on genuine Rolex, the day snaps instantly. On some replicas, the transition is sluggish, with the day wheel visibly rotating over several minutes rather than snapping.

The date should also snap at midnight, not gradually roll over.

Rolex Day-Date genuine 18k gold versus replica gold-plated comparison showing tone and finishing differences on President bracelet

The Movement Swap — The Case Nobody Talks About

I saved this for its own section because it is a scenario that most guides completely ignore — and it is becoming more common.

Here is the situation: you are looking at a watch that passes every external check. The crown is correct. The dial printing is sharp. The bracelet fits flush. The bezel looks right. The serial number checks out against the reference. Everything screams genuine.

But the movement has been swapped.

Why does this happen? Because a genuine Rolex movement — particularly a caliber 4130 (Daytona) or 3285 (GMT-Master II) — is worth thousands of dollars on its own. Watchmakers and dealers know this. Some buy genuine Rolex watches, extract the original movement, replace it with a replica clone movement, and sell the watch as “genuine.” They then sell the original movement separately for a substantial profit.

The external parts are still genuine. The case, bracelet, dial, bezel — all authentic Rolex. Only the heart has been replaced.

How to protect yourself:

  1. Always request a movement inspection when buying from a non-authorized dealer. A watchmaker opens the case back and visually identifies the movement.
  2. Check the movement serial — Rolex movements are serialized. A watchmaker can verify the movement serial against Rolex's records (though this requires sending it to Rolex or an authorized service center).
  3. Compare the movement to known references — if you are buying a Submariner 126610LN, it should contain a caliber 3235. If you see anything else inside, something is wrong.
  4. Buy from sources that provide movement photos — reputable sellers (whether of genuine or replica watches) who photograph the movement are more transparent.

This is the final level of verification — and it is the one that catches the most sophisticated deceptions. The visual exterior can be perfect. The movement tells the truth.

Movement comparison showing a genuine Rolex caliber 3235 next to a clone movement inside an otherwise authentic Rolex case

What the Experts Say — Video Comparisons

I have walked you through the checkpoints, but seeing them on video is different. These are the best expert comparisons available — professional watchmakers with genuine and replica side by side under magnification.

Side-by-Side: Daytona Under the Microscope

Watchfinder & Co. examined what they called “the most accurate fake Rolex yet” — a replica Daytona 116500LN using real 904L steel, genuine ceramic, and a full clone of the caliber 4130 movement.

Watchfinder & Co. compares a genuine Daytona with a super clone. Key moments: dial printing (4:30), ceramic bezel (6:00), movement inspection (8:00).

At normal viewing distance, the replica is indistinguishable. Only under a loupe with the genuine watch alongside does the difference emerge.

Deep Dive: GMT-Master II “Pepsi” Disassembly

Wristcheck's Swiss-trained watchmaker disassembles both a genuine and super clone GMT-Master II “Pepsi” to compare at component level — hairspring, inertia weights, micro-finishing.

Wristcheck disassembles genuine and replica GMT-Master II. Most technical comparison available — covers movement, hairspring, and NFC authentication.

The Technology Behind Modern Replicas

How did replicas get this close? Watchfinder & Co. explains the role of 3D printing, CNC machining, and rapid prototyping in modern watchmaking — and how replica manufacturers now use the same technologies.

Watchfinder & Co. on the manufacturing technology behind modern super clones — 3D printing, CNC machining, and automated assembly.

More expert comparisons: Wristcheck: Real vs Fake Daytona ↗ · Adrian Barker: How To Spot A Fake Rolex ↗

Your Score — How Sharp Is Your Eye?

You've read the details, seen the experts. Now test your eye. Five models, five questions — can you spot every replica?

Question 1 of 5 Datejust

Now — can you tell which one is the replica?

See for Yourself

You now know the checkpoints — model by model, inside and out. From the Cyclops on a Datejust to the chronograph click on a Daytona, from the GMT hand jump to the gold weight on a Day-Date.

We put the same attention into every piece in our collection. Browse it and judge with your own eyes.

Or browse all models

A note from us.

We sell replica watches — and we are transparent about that. What we do not want is for anyone to use our products to mislead others by presenting them as genuine. Every watch we sell is clearly a replica.

One more thing: if you order a watch with a box and warranty card, the serial number on the card will never match the serial number on the watch. That is by design — we do not provide matching documentation that could be used to pass a replica as authentic.

Browse with confidence. What you see is what you get.

Frequently Asked Questions

How can you tell if a Rolex is real or fake?

The fastest checks are: Cyclops magnification (exactly 2.5x on genuine), rehaut engraving quality, dial text sharpness, and weight. But every model has its own tells — a GMT-Master II needs the GMT function tested, a Daytona needs the chronograph checked, and gold models need weight and gold purity verification. For definitive authentication, a watchmaker should inspect the movement.

What is a super clone Rolex?

A super clone uses the same materials as the genuine — 904L steel, sapphire crystal, ceramic bezel — and houses a cloned version of the original Rolex caliber rather than a generic movement. They represent the highest tier of replicas and are the hardest to distinguish without tools.

Can a watchmaker tell a super clone from a real Rolex?

Yes. The movement finishing — beveling depth, circular graining quality, and the balance assembly (free-sprung vs regulated) — reveals the truth under professional inspection. Externally, the differences on high-end super clones are minimal.

What is the most faked Rolex model?

The Submariner. It has been the most replicated watch in the world for decades. The Daytona, Datejust, and GMT-Master II follow closely.

How much does a real Rolex cost vs a replica?

Genuine Rolex watches retail from around $5,000 (Oyster Perpetual) to over $75,000 (precious metal Day-Date or Daytona). Pre-owned prices for popular models often exceed retail. High-quality super clones typically range from $300 to $1,000 depending on the movement and materials.

Do fake Rolex watches keep accurate time?

High-quality replicas with automatic movements typically keep time within +/- 10-20 seconds per day. Genuine Rolex watches are certified to -2/+2 seconds per day under the Superlative Chronometer standard. Budget replicas with quartz movements tick rather than sweep but keep accurate time.

What is the movement swap problem?

Some sellers buy genuine Rolex watches, extract the original movement (worth thousands), replace it with a replica clone movement, and sell the watch as “genuine.” The exterior is authentic — only the movement has been swapped. This is why a movement inspection is critical when buying pre-owned.

Does the GMT function work on replica GMT-Master IIs?

Not always. On a genuine GMT-Master II, the GMT hand moves independently. On many replicas, the GMT hand is connected to the hour hand and cannot be adjusted separately. Testing the crown positions is a quick way to check.

What should I check first on a gold Rolex?

Weight. Always weigh first. Genuine gold Rolex watches use solid 18k gold — the case, bracelet, and clasp are all precious metal. Replicas use gold-plated base metals. A precise weight measurement compared to published specifications is the fastest initial check, followed by gold purity testing (acid test or XRF).

Is it legal to buy a replica Rolex?

Laws vary by country. In many jurisdictions, purchasing a replica for personal use is not a criminal offense, though selling counterfeit goods is illegal. In most countries, buying for personal use is generally not prosecuted, but importing through customs carries risks — goods can be seized and destroyed. Research the laws in your country before purchasing.

What happens if customs seizes a replica watch?

Customs may detain and ultimately destroy the item. In most cases, recipients face no criminal penalties for personal-use quantities, but the item is lost. Some sellers offer shipping methods designed to minimize this risk and provide reshipment guarantees.

How has 3D printing changed replica watches?

3D printing allows replica manufacturers to scan genuine components and reproduce them with extreme precision. Combined with CNC machining and automated assembly, this has drastically narrowed the gap between genuine and replica — particularly in external components like cases, bezels, and dials.