The short answer
A replica Globemaster Co-Axial Master Chronometer is a Chinese-made copy of the Omega Globemaster. It copies the outside of the watch. It does not copy the certification. No replica has passed the METAS Master Chronometer test. Sellers use the phrase because the original dial text says it.
What the original watch is
Omega released the Globemaster in 2015. It was the first watch to carry the Master Chronometer label. The case measures 39 mm across and 13.4 mm thick. The bezel is fluted and made of tungsten carbide. The dial has a pie-pan shape with a date window at 6 o'clock. Inside is Calibre 8900: twin barrels, 60 hours of power reserve, a Co-Axial escapement and a silicon balance spring. METAS tests each movement for 10 days across eight checks. Accuracy must fall between 0 and +5 seconds per day. The watch must keep running after exposure to 15,000 gauss.
What the replica copies
Most replicas match the 39 mm case width. They copy the fluted bezel, though many use steel in place of tungsten carbide. The pie-pan dial, applied indexes and date at 6 are present. The caseback carries the Observatory medallion in relief. Case thickness runs 0.5 mm to 1 mm over the original on lower-tier builds.
Movement inside a replica
Common builds use a Miyota 9015 or a Chinese copy of the ETA 2824. Makers add a decorative plate and rotor to imitate the 8900. The plate hides the real movement. Beat rate on these builds is 28,800 vph, not the 25,200 vph of the Omega 8900. Power reserve lands near 40 hours. Magnetic resistance is not tested. Accuracy is not certified.
Points that differ from the original
- Certification: none. No METAS card, no Master Chronometer test data.
- Bezel material: steel on most replicas, tungsten carbide on the original.
- Caseback text: font depth and engraving lines are shallow on replicas.
- Date font: wider and bolder on many replica dials.
- Hands: the hour hand on replicas is often 0.2 mm short.
- Lume: weaker and shorter-lasting.
Price range
Low-tier builds sell for $120 to $200. Mid-tier builds with a Miyota 9015 sell for $250 to $450. High-tier builds with a cloned 8900 layout sell for $500 and up. Price tracks case finish and dial print, not certification.
Checks before you buy
- Ask for the movement name. A seller who says 'clone 8900' means a decorative plate.
- Request a photo of the caseback medallion at an angle.
- Ask for the case thickness in mm.
- Confirm the date sits at 6 o'clock and flips at midnight.
- Check that the seller lists water resistance as a rating, not a test result.