The replica Omega 3604 is a first copy Omega sold under a seller listing code, not an official Omega reference number. The same code appears on listings for a dive-style Omega, and the watch behind it ranges from a $70 quartz build to a $300 automatic with a clone movement. Movement type, case finishing, and dial print decide whether the watch feels close to a genuine Seamaster or falls apart in a year.

Is 3604 a real Omega reference number?

No. Omega reference numbers run long, such as 210.30.42.20.03.001 for a current Seamaster Diver 300M, and the brand publishes each model's specs on its own site. The short 3604 code comes from sellers, who use it as a title tag to group listings.

Two sellers can use the same code and ship different watches. Treat the number as a search term, not a spec sheet. Ask for photos of the exact unit and the movement before you pay.

What should you check before you buy?

Five parts decide the quality tier of any first copy Omega. Check them in this order, because a good case cannot save a bad movement.

1. Movement

Three movement families show up in this price range. A quartz movement is the cheapest and the most reliable over time. A Japanese automatic such as the Seiko NH35 or Miyota 8215 costs more and runs with a sweeping seconds hand. A decorated clone of an Omega 8800 or 8900 sits at the top of the replica market and costs the most.

Ask which one is inside. Sellers who cannot name the movement often ship whatever is on hand.

2. Case and bezel

Look for 316L stainless steel, a screw-down case back, and a bezel that clicks without play. Some sellers advertise 904L steel, which is rare on replicas and hard to confirm from photos. A ceramic bezel insert keeps its color, while aluminum inserts scratch and fade.

3. Dial, hands, and lume

On a Seamaster-style dial, the wave pattern, marker alignment, and date window position are the tells. Printed markers look flat next to applied markers with polished edges. Cheap lume glows for ten minutes, while better lume lasts through the night.

4. Bracelet and clasp

Solid end links sit flush against the case. Folded links rattle and pull hair. Check that the clasp closes with a firm click and that the logo engraving is sharp, not blurry.

5. Water resistance

Ignore any 300m claim on a replica. Gaskets on budget builds are not pressure tested, and a test costs more than the watch. Wear it in rain, take it off before you swim.

How much should a replica Omega 3604 cost?

Prices cluster into three bands. Anything far below the bottom band is a bait listing, and anything far above the top band is seller markup.

• $50 to $90: quartz movement, mineral glass, folded bracelet. Fine as a beater.
• $120 to $220: Japanese automatic, sapphire crystal, solid links, decent lume. Best value for most buyers.
• $250 to $400: clone automatic movement, better dial print, closer case finishing, sapphire with anti-reflective coating.

Shipping and customs risk sit outside that number. A $150 watch that gets seized at the border costs you $150.

Quartz or automatic: which one should you pick?

Pick quartz if you want a watch that keeps time and needs a battery every two years. Pick automatic if the sweeping seconds hand and the weight on the wrist matter to you. Automatic replicas can run fast or slow out of the box, and a local watchmaker can regulate an NH35 for a small fee.

How do you spot a low-quality build?

• Blurry dial print or a logo that sits off-center
• Bezel that turns with grit or lines up wrong at 12
• Hollow end links that move when you press them
• Stock photos only, with no photo of the actual unit
• Price under $40 with "Swiss made" in the title

One or two of these on a $70 watch is normal. Three or more on a $250 watch means you should buy elsewhere.

Care and sizing

Most Seamaster-style cases use a 20mm lug width, so straps are easy to find and swap. Measure your wrist and check the case diameter in the listing, since 42mm wears large on a 6.5 inch wrist. Wipe the case with a soft cloth after wear, keep it away from hot water, and skip the ultrasonic cleaner.

Do not send a replica to Omega for service. The brand will not touch it. A local watchmaker can swap a movement or a battery for a small fee, and that is the practical option.

Legal and shipping notes

Counterfeit watches that carry a trademark can be seized by U.S. Customs and Border Protection at import. Selling a watch as genuine when it is not breaks trademark law and can lead to fines. Buy for personal use, keep the seller's description on file, and never resell it as an original.

FAQ

Is the replica Omega 3604 waterproof?

No. Treat every replica as splash resistant at best. Rain is fine; showers, pools, and the ocean are not.

Can I get a replica Omega 3604 repaired?

Yes, by an independent watchmaker. Movement swaps and battery changes are cheap. Parts that match the case, such as a crown or crystal, are harder to source.

Why do listings use the 3604 code?

Short codes help sellers group similar watches and dodge keyword filters. The code tells you nothing about the parts inside.

What is the best first copy Omega for daily wear?

A $150 to $200 automatic with a sapphire crystal and an NH35 movement. It keeps time, takes a scratch, and costs little to replace.