Short Answer
A replica Constellation 38mm copies the Omega Constellation in the 38mm case size that Omega sold from about 2009 to 2018. The genuine watch runs the co-axial calibre 8500 with a 60-hour power reserve. Most replicas use a quartz module or a generic Chinese automatic. Case sizes on replicas run from 37mm to 39mm. Weight lands near 110g to 130g against about 150g for the steel original.
Genuine 38mm Constellation: Key Numbers
- Case diameter: 38mm
- Case material: stainless steel, plus steel and rose gold references
- Movement: Omega calibre 8500, automatic, co-axial escapement
- Power reserve: 60 hours
- Beat rate: 25,200 vph, 39 jewels
- Crystal: sapphire, anti-reflective coating on both faces
- Water resistance: 100m
- Bracelet: integrated, no standard lugs, butterfly clasp
- Reference example: 123.10.38.21.01.001, steel on steel
What Replicas Get Right and Wrong
The case profile is the part most replicas copy with success. The dial is where most fail. Genuine dials carry applied Roman numerals with polished facets. Replica dials use stamped markers with flat edges. The date window on the real watch sits under a sapphire crystal with a slight bevel. Replica date apertures show a cut edge. The claw shapes at 3 and 9 o'clock are cast, not milled, on lower tiers.
Movements differ by tier. A quartz replica ticks once per second and has no rotor. An entry automatic uses a 2813-type movement with a 40-hour reserve at best. Higher tiers use a decorated copy of a Swiss pattern. No replica carries a real co-axial escapement. Omega holds the tooling for that part, and no factory outside Switzerland produces it.
Common Replica Specs
- Case: 316L steel, 38mm to 39mm, thickness 12mm to 13mm
- Glass: mineral or sapphire, coating on one face or none
- Movement: quartz, or 2813/2824-type automatic
- Water resistance: 3 ATM to 5 ATM on paper, no pressure test
- Bracelet: folded links, push pins, stamped clasp
- Weight: about 110g to 130g
Many sellers in this market also list Rolex copies. Case finishing standards track the same tiers on both brands.
Price Bands
Listings group into three bands. Quartz versions sell from $20 to $60. Entry automatics run $60 to $150. Higher-tier automatics with a decorated movement run $150 to $400. Prices shift with seller and shipping route. No public dataset tracks these sales, so treat any single quote as one data point.
Legal Facts for US Buyers
Counterfeit watches are illegal to import and to sell in the United States. 18 U.S.C. § 2320 covers trafficking in counterfeit goods and carries up to 10 years in prison for a first offense. 19 U.S.C. § 1526 lets CBP seize and destroy counterfeit shipments. CBP publishes seizure totals each year. A single watch in a parcel can be seized, and the buyer has no refund path through customs.
Checks Before You Buy
- Ask the seller to measure the case with calipers and send the photo.
- Ask for a movement photo. A quartz movement shows a battery hatch.
- Check the end links against the case. Gaps show on most replicas.
- Compare the Roman numerals to the reference photo on Omega's site.
- Ask for the return address on the parcel.