If you are hunting for a replica Omega Planet Ocean Ultra Deep 6000M, here is the short answer. You can buy something that photographs like the watch. You cannot buy the watch. No counterfeit of this model has ever survived the pressure test that gives it its name, because the expensive parts of an Ultra Deep are the case, the crystal, the gaskets and the machining tolerances. Copying a dial is cheap. Reaching 6,000 meters is not.
What the real one is
Omega built the production Ultra Deep from the prototype that rode Victor Vescovo's submersible to the bottom of the Mariana Trench in 2019, a recorded 10,928 m. The retail version is rated to 6,000 m (20,000 ft) and certified to ISO 6425, with a safety margin built into the test. The case measures 45.5 mm across and about 15 mm thick, with roughly 52 mm lug to lug, so it wears large on most wrists. Titanium models use Grade 5 titanium, and the steel version uses Omega's own O-MEGASTEEL alloy. The sapphire crystal runs about 5.2 mm thick. Lugs are the Manta design, meaning there are no spring bars at all. The strap bolts into the case. Inside sits Calibre 8912, a Master Chronometer certified by METAS, resistant to 15,000 gauss, with 60 hours of power reserve.
Where replicas fall apart
Water resistance is the first casualty. Sellers will print 6000M on a caseback and quote 100 m of real-world rating in the listing. Nobody pressure-tests those cases, and a few buyers a year find out the hard way at a pool. The Manta lug system is the second casualty. Replicas usually fake it with standard spring bars, drilled holes, or glue, and the strap will not sit the way the real one does.
Crystal thickness is the third. Genuine is 5.2 mm of domed sapphire. Replicas run something closer to 2 mm with a blue anti-reflective tint that looks nothing like the real thing under light. Weight is the fourth. Grade 5 titanium is light and warm in the hand. Most replicas are 316L stainless, so they feel dense and cool and the surface finish is glossier than it should be. And every replica hides its movement behind a closed caseback, which is convenient, because there is no METAS Master Chronometer card, no 15,000 gauss rating, and often a Seagull or Miyota clone ticking inside.
Tells when you are staring at photos
- Price. Anything that claims to be an Ultra Deep for a few hundred dollars is a counterfeit, a bait listing, or a scam. The genuine watch sits in the low five figures.
- Lugs. If you can see spring bar holes or a standard pin setup, it is not the Manta system.
- Caseback shape. The real one is a domed, sculpted titanium back with crisp engraving. Fakes are flat and shallow.
- Paperwork. A real Ultra Deep comes with a Master Chronometer certification card and a serial that a boutique can check.
- Depth claims. Ink is easy to apply. Pressure testing to 6,000 m plus margin is not, and no replica factory publishes that data.
The US legal picture
Counterfeit watches are illegal to import into the United States. Customs and Border Protection seizes and destroys them, and you generally do not get your money back. Trafficking in counterfeit goods is a federal crime under 18 U.S.C. § 2320, which is aimed at sellers and resellers. Buying one for your own wrist is rarely prosecuted, but that is a small comfort when the package disappears at the port and the seller stops answering email. Reselling is where people actually get into trouble, and it is not worth the risk for a watch that will not go in the water.
What to buy instead
If you want the look and a real depth rating, the legitimate route is better than most people expect. Seiko Prospex, Citizen Promaster, Orient, Doxa, Christopher Ward, Squale, Zelos and Vaer all sell genuine dive watches with honest ratings, often 200 m to 300 m, for a fraction of a fake Ultra Deep with a mystery movement. Some smaller brands build their own-name homages in titanium with the same tool-watch proportions. They are legal because they do not carry Omega's trademarks, and you can actually swim with one. You give up three letters on the dial. You keep the function, the warranty and the resale value.
What I would tell a friend
Buy the real thing used if the Ultra Deep shape is what you want, or buy a real diver from a brand that stands behind it. A counterfeit Ultra Deep is a costume of a tool watch. It looks right in a photograph and fails everywhere the actual engineering lives.