A fake Omega Master Chronometer 450 is a replica of Omega's METAS-certified Master Chronometer line, in most cases a Seamaster or Planet Ocean with a 45 mm case sold under a "450" listing tag. The replica copies the dial, case shape, and caseback engraving. It does not carry METAS certification, the 0/+5 second daily rate, or 15,000-gauss magnetic resistance.
What does "Master Chronometer 450" actually mean?
Omega uses "Master Chronometer" as a certification, not a model number. The "450" in replica listings is a seller-side code that usually points to the 45 mm Planet Ocean case size or an internal batch number.
Genuine Master Chronometer watches pass eight tests run by METAS after the movement is cased. Those tests cover magnetic resistance to 15,000 gauss, a daily rate of 0 to +5 seconds, power reserve, and water resistance.
Which Omega models show up as Master Chronometer 450 replicas?
- Seamaster Planet Ocean 600M in 43.5 mm and 45.5 mm
- Seamaster Diver 300M Master Chronometer 42 mm
- Aqua Terra 150M Master Chronometer 38 to 41 mm
- Constellation and De Ville Master Chronometer dress models
The 45 mm Planet Ocean is the watch most buyers are hunting when they type the 450 tag. Its thick case and detailed caseback make it one of the harder Omegas to copy well.
How can you tell a fake Master Chronometer 450 from a genuine one?
Start at the caseback. Genuine watches carry a crisp "MASTER CHRONOMETER" engraving, an 8-digit serial that matches the movement, and a wave-edged caseback ring. Replicas tend to show shallow laser engraving, mismatched serials, and a rotor that rattles.
- METAS card: genuine watches ship with a numbered certificate. Replica cards exist, but the number will not match the movement.
- Rate: on a timegrapher a genuine watch reads 0 to +5 seconds per day. Most replicas land between -10 and +20 seconds.
- Magnetism: put a strong magnet near a replica and it will run fast or stop. A real Master Chronometer keeps time.
- Finishing: inspect the balance bridge, the rotor engraving, and the black polish on the balance cock.
What movement sits inside a replica Master Chronometer 450?
Top-tier replicas use a decorated automatic movement built to mimic the Omega 8500 or 8900 layout. The rotor is engraved and the hand stack is correct, but there is no METAS testing and often no silicon hairspring.
Mid-tier versions use a 2824 or 2836 base with a decorative plate on top. Low-tier versions use quartz, which is the quickest tell: the seconds hand ticks instead of sweeping.
How much should a fake Omega Master Chronometer 450 cost?
- Under $120: quartz or rough automatic, wrong case thickness, poor lume.
- $180 to $350: solid automatic, correct dial print, basic finishing, average bracelet.
- $400 to $700: clone-style movement, sapphire crystal with AR coating, ceramic bezel, accurate case profile.
Anything sold as a "1:1 METAS certified" replica is marketing talk. METAS does not test or certify replica watches at any price.
What should you check before buying a Master Chronometer replica?
- A timegrapher video showing rate and amplitude
- A lume shot to confirm the hands and markers glow correctly
- A date-flip video at midnight
- Crown action, bezel click, and bracelet end-link fit
- A written return window and service policy
Water resistance on a replica is a claim, not a spec. Do not swim with a fake 600M diver until a watchmaker pressure-tests it first.
Does a fake Master Chronometer 450 resist 15,000 gauss?
No. The 15,000-gauss rating depends on a silicon hairspring and a non-magnetic escapement, parts that clone movements rarely use. Expect normal magnetic sensitivity instead.
Can a replica Master Chronometer movement be serviced?
Yes. Most clone automatics can be cleaned, oiled, and regulated by an independent watchmaker for $50 to $150. Parts availability is the main limit, so ask about spare movements before you buy.
Are METAS-certified Omega replicas legal to buy in the US?
Counterfeit watches are illegal to import into the United States and can be seized by U.S. Customs. Buyers carry the risk of losing the watch and the money with no legal recourse.