A fake Globemaster 45mm is a replica of the Omega Constellation Globemaster, sold with a case listed at 45mm. The genuine Globemaster measures 39mm, and the Annual Calendar version measures 41mm. No factory Globemaster has ever shipped at 45mm, so that number in a listing points to a mislabeled spec, a fantasy case build, or a seller measuring the box instead of the watch.
Treat the 45mm label as a warning sign and verify the case before you pay. This guide covers what the number tells you, how to measure a first copy Globemaster, and which details separate a good replica from a poor one.
Does Omega make a 45mm Globemaster?
No. The Globemaster line arrived in 2015 as Omega's first Master Chronometer watch, and every version sits below 42mm.
- Globemaster 39mm: the core model in steel, Sedna gold, and two-tone.
- Globemaster Annual Calendar 41mm: added month and date windows.
- Other 39mm variants: diamond-set bezels and different dial colors.
A 45mm Globemaster does not exist in Omega's catalog. Sellers who list one are describing a replica case someone built larger, or they are quoting packaging dimensions.
Why do 45mm listings appear at all?
Replica listings get copied between storefronts, so one wrong millimeter entry spreads across dozens of pages. Another cause is confusion between the watch and its packaging: a display box or travel case can measure 45mm or more.
A smaller group of sellers builds fantasy Globemaster-style watches on oversized cases. These carry the pie-pan dial and fluted bezel look on a bigger cushion, then get sold as Globemasters. They are not copies of any real reference, so nothing lines up against a genuine watch.
How do you verify the case size before buying?
- Ask for a photo with digital calipers across the case at 3 and 9 o'clock, crown excluded.
- Ask for a shot next to a credit card. A standard card runs 85.6mm long, so a 39mm case covers less than half of it.
- Request lug-to-lug and thickness. Most 45mm cases span 52mm or more across the lugs, which wears far bigger than a 39mm Globemaster.
- Check the lug width. A real Globemaster uses 20mm at the lugs. A 45mm case holding 20mm lugs looks stretched, and the mismatch shows in photos.
What separates a good first copy Globemaster from a poor one?
Dial and pie-pan shape
The dial has a raised center with a step down to the outer ring, the pie-pan shape. On cheap replicas that step is shallow or missing, and the printed text sits too tall or too thin. Look at the wordmark under 12 o'clock: on a good copy the lettering is crisp and matches the weight of the minute track.
Bezel and case finish
The fluted bezel should show even ridges with sharp inner corners. Cheap copies show rounded ridges and polish that bleeds into the flutes. Several genuine Globemaster bezels use tungsten carbide, which holds a mirror finish. Replicas use polished steel or a coating, and that coating wears off at the edges after months of daily wear.
Caseback medallion
The caseback carries the Constellation observatory medallion with eight stars. That relief is hard to fake. Compare the star count, the dome shape, and the depth of the engraving. Flat, shallow stamps give the watch away in seconds.
Movement inside
Three movement types show up in these watches. Quartz is the cheapest, and the seconds hand ticks instead of sweeping. A Miyota 8215 or Seagull automatic gives you a sweep and a date with no decoration. The top tier uses a decorated automatic with a rotor engraved to look like Omega calibre 8900, running at 25,200 or 28,800 beats per hour.
Replicas never carry METAS Master Chronometer certification. If a listing claims it, that is marketing copy and not a tested result.
Bracelet and clasp
The genuine Globemaster bracelet has a clasp with a small push-button micro-adjust. Many fakes ship with a plain fold-over clasp and stop there. Check the end links for gaps against the case, and confirm the center links are brushed while the outer links are polished.
What do fake Globemaster watches cost?
Most listings fall between $60 and $400, split into three bands. Quartz copies sit at the bottom, basic automatics in the middle, and decorated clone movements with sapphire crystal sit at the top.
- $60 to $110: quartz movement, mineral or acrylic glass, stamped caseback.
- $120 to $220: Miyota or Seagull automatic, mineral glass, basic bracelet.
- $250 to $400: decorated clone 8900, sapphire crystal, closer dial print and clasp detail.
Ask what crystal and what movement is inside before comparing two prices. Otherwise you are comparing a plastic-glass watch against a sapphire one.
Common flaws on a 45mm fake Globemaster
- Date font too thick or sitting off-center in the window.
- Seconds hand that stutters or ticks twice per second.
- Fluted bezel ridges that look uneven from an angle.
- Crown that will not screw down flush with the case.
- Lume that fades within 20 minutes.
- Rotor noise you can hear across a room.
Frequently asked questions
Is a fake Globemaster 45mm worth buying?
Only if you want the look and accept the size. Since no real Globemaster is 45mm, you are buying a fantasy piece rather than a close copy. Buyers who want something that holds up in a side-by-side comparison should stay with a 39mm replica.
Can a jeweler tell it is a fake?
Yes, in most cases within seconds. The caseback medallion, the bracelet clasp, and the movement finish are the fastest tells. A watchmaker with a loupe will also spot the dial print and the crystal edge.
Does the replica have Master Chronometer certification?
No. METAS tests each genuine watch and issues a certificate tied to that movement. Replicas skip that process, and no replica carries a valid Omega warranty or a serial in Omega's database.
What should you ask before paying?
- Caliper photos of the case diameter.
- Movement maker and beat rate.
- Crystal material, sapphire versus mineral.
- Water resistance claim and whether the caseback gasket is fitted.
- Return policy plus a photo of the exact watch that ships.
Bottom line
A 45mm Globemaster does not exist, so a fake Globemaster 45mm is either mislabeled or a fantasy build. Confirm the case size with caliper photos, check the movement type, and study the dial step and caseback relief before you buy. If the seller cannot send those photos, move on to another listing.