Quick answer

A fake Omega Seamaster Planet Ocean 600M is a counterfeit watch shaped to resemble the genuine one. It has no Omega movement, no Omega warranty, no METAS certification, and no service path through Omega's network. Most examples sell between $250 and $600 and photograph well. On a wrist, under a loupe, or beside the real reference, the differences surface fast.

What the real Planet Ocean 600M is

The genuine watch is a serious dive instrument. Omega rates the case to 600 meters, which means it clears the screw-down crown, the helium escape valve at 10 o'clock, and the caseback gaskets to that depth before it leaves the factory. The newer versions carry Master Chronometer certification, meaning METAS tested the finished watch, not just the movement inside it. That testing covers rate in five positions, power reserve, water resistance, and resistance to 15,000 gauss of magnetic field.

None of that is cheap to build. Which is the point.

Where fakes give themselves away

I look at the same handful of spots every time, because counterfeiters spend their money on the parts you see in a listing photo and skip the rest.

  • Crystal and coating. Genuine sapphire has a double-sided anti-reflective treatment that nearly vanishes at an angle. Fakes go milky or throw a blue-green glare.
  • Bezel action. A real dive bezel clicks with even tension and no play. Fakes wobble, feel gritty, or line up off-center at 12.
  • Dial printing. Look at the depth rating text and the Omega symbol. Fakes blur the small type, and the date window often sits a hair off-axis.
  • Crown threads. The crown should screw down smoothly and stop crisply. Gritty threads are a warning sign, and on a 600 m watch that matters.
  • Caseback engraving. The Hippocampus medallion on a real caseback has depth and sharp edges. Fakes stamp it shallow and soft.
  • Movement. The caseback is sapphire, so you can see in. A genuine co-axial movement has finishing, a balance bridge, and a rotor you can read. A clone is a plain rotor over an undecorated base.

Water resistance and the 600 m claim

This is the part buyers underestimate. A counterfeit case is not pressure-tested. It might survive a shower. It will not survive 600 meters, and in plenty of cases it will not survive a pool. If you swim with one and it floods, there is no warranty and no recourse, because the watch was never rated by anyone.

Movement and accuracy

Master Chronometer standards allow 0 to +5 seconds per day across positions after a 15,000 gauss exposure. A counterfeit usually runs a cheap automatic or quartz clone with no positional regulation at all. You might get lucky and see plus or minus ten seconds. You might also get a watch that loses a minute a day.

Why the price is the whole story

Counterfeit makers sell a silhouette. There is no research budget, no testing lab, no spare parts pipeline, and no authorized service center that will touch it. You are paying for the outside. That is the entire product.

The legal side in the United States

Counterfeits are not a gray area here. Importing counterfeit goods into the US is prohibited and shipments get seized and destroyed by Customs and Border Protection. Selling them can bring civil damages under the Lanham Act and, in trafficking cases, criminal charges. Resale value is zero, so the money does not come back either.

Better ways to get the look

If you like the Planet Ocean silhouette, a used genuine reference costs more but holds value and can be serviced. If the budget is firm, legitimate dive watches from mainstream brands give you real water resistance, real warranties, and no legal exposure. Homage designs exist across the market. They do not pretend to be Omega, which is exactly why they are safe to own and easy to resell.

Checking a watch you already have

Take it to an Omega boutique or an authorized service center. They will verify the serial, open the case, and tell you in minutes. Papers and packaging help but are widely faked, so the watch itself is what matters. If a seller refuses an inspection or pushes you to decide today, that tells you everything.

Buying a counterfeit is not a shortcut to owning the watch. It is a different object with a similar outline, and it comes with none of the engineering or the protection that makes the original worth wanting.