For most buyers, the best fake Patek Philippe 3700 movement is the ETA 2892-A2 or its Sellita SW300 equivalent. It matches the two things a 3700 replica has to get right: a thin automatic that keeps the case near the reference profile, and a 28,800 vph beat with no date and no running seconds. The criteria used here are thickness, beat rate, hand and date layout, rotor decoration, and serviceability, because those are the details a wearer or a watchmaker will notice.

Is a Fake Patek Philippe 3700 Worth It? A Buyer's Guide

What the original 3700 movement is

The Nautilus ref. 3700/1A used calibre 28-255 C, an ultra-thin automatic that traces back to the Jaeger-LeCoultre 920 family, the same architecture behind other thin Swiss automatics of the 1970s. The reference is time-only: no date, no seconds hand, and a 4 Hz balance. That short spec sheet is the whole checklist. A replica that adds a date aperture, a ticking seconds hand, or a 6-beat stutter is running a movement that was never shaped for this case.

fake patek philippe 3700 price

Top pick: ETA 2892-A2 or Sellita SW300

This is the build that lands closest to the original on the wrist. Both movements sit at roughly 3.6 mm tall and run at 28,800 vibrations per hour, so the case stays thin and the seconds hand, when a build includes one, sweeps at the same rate as the reference.

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Pros

  • 3.6 mm height keeps the case close to the reference profile instead of adding bulk.
  • 28,800 vph matches the original beat rate.
  • No-date variants exist, which removes the ghost date crown position.
  • Parts and servicing are available at any competent watchmaker.

Cons

  • Costs more than a Miyota or Seagull build.
  • Rotor engraving quality varies, and a rough engraving is an easy tell.
  • Date versions are common, so confirm the no-date spec before you pay.

Best for: buyers who want the closest match in thickness and sweep and will pay for it.

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Miyota 9015 and 9039

The 9015 is the workhorse of the replica world and the 9039 is its no-date sibling, which makes the 9039 a natural fit for a 3700 build.

Pros

  • 3.9 mm height, thin enough for a Nautilus-style case.
  • 28,800 vph, so the sweep reads correctly.
  • 9039 has no date at all, matching the reference layout.
  • Widely available and easy to replace if it fails.

Cons

  • The 9015 carries a date, so most builds need the 9039 instead.
  • The free-spinning rotor is louder than a 2892 and can be felt on the wrist.
  • Finishing under the rotor is plainer than a Swiss movement.

Best for: daily wear, first replica, and anyone who wants a low-stress movement.

Seagull ST1812 and Hangzhou 6460

Both are Chinese clones of the 2892 layout, which is why they show up in thin 3700 cases rather than in the thicker 2824-style builds.

Pros

  • Same footprint as a 2892, so the case stays slim.
  • Lower cost than Swiss movements.
  • Decent decoration on the better batches, including engraved rotors.

Cons

  • Quality control varies from batch to batch.
  • Spare parts are harder to source than ETA or Miyota parts.
  • Timekeeping out of the box is less consistent.

Best for: budget builds where the case profile matters more than the name on the rotor.

The 2824 trap

Many cheap 3700 replicas hide an ETA 2824 or a Chinese clone such as the ST2130 inside a thicker case. The 2824 family is about 4.6 mm tall, roughly a millimeter more than a 2892, and most versions carry a date. That extra millimeter shows up as a case that sits high on the wrist, and the date wheel shows up as a crown position that does nothing. If a seller cannot tell you which movement is inside, assume it is this one.

Checks to run before you buy

  1. Ask for the exact movement reference and a clear photo of the movement itself.
  2. Confirm there is no date window and no running seconds hand.
  3. Confirm the beat rate is 28,800 vph and not 21,600.
  4. Ask for case thickness and compare it to the reference figure.
  5. Check the caseback style, since the 3700/1A is known for a solid back.
  6. Look at the rotor engraving up close: font, depth, jewel count text, and whether the finish matches the claimed movement.

Which one fits your use case

  • Daily wear with minimal fuss: Miyota 9039.
  • Closest to the reference in profile and sweep: ETA 2892-A2 or Sellita SW300.
  • Tight budget: Seagull ST1812 or Hangzhou 6460.
  • Display or collection piece: a decorated 2892 with a properly engraved rotor.

These are replica and tribute watches. They are not made, sold, or endorsed by Patek Philippe, and the rules on buying and importing them differ from country to country.