Short answer
The keyword replica aqua terra 220.12.41.21 points to copies of the Omega Seamaster Aqua Terra 150M Master Chronometer 41 mm. The full reference is 220.12.41.21.01.001. The genuine watch uses a 41 mm steel case, a black teak pattern dial, a steel bracelet, and caliber 8900. Replicas copy the outside. None carry the Omega movement, the METAS Master Chronometer certificate, or the 15,000 gauss magnetic rating. No replica is a 1:1 copy of this watch.
Genuine reference data
- Case: stainless steel, 41 mm, sapphire crystal front and back
- Water resistance: 150 m, printed as 150m/500ft on the dial
- Movement: Omega caliber 8900, automatic, co-axial escapement, silicon balance spring, 60 hour power reserve, 28,800 vph
- Certification: Master Chronometer, tested by METAS
- Magnetic resistance: 15,000 gauss
- Dial: black teak pattern, applied indices, date window, lume on hands and markers
- Bracelet: steel, butterfly clasp, brushed outer links with polished center links
What differs on replicas
Most replicas run a 28,800 vph automatic: Seagull ST2130, Miyota 9015, or a Chinese copy of the 8500 and 8900 family. The case back shows a decorated rotor and plates. The escapement is a standard Swiss lever, not co-axial. The balance spring is metal, not silicon.
Case finishing varies by factory. Lugs can show sharp edges at the bevels, and crown threads start rough on low tier builds. Crystal is sapphire on mid and high tier builds and mineral glass on cheap ones. Anti reflective coating sits on the inside on some builds and on both sides on a few.
Water resistance is not tested at the factory. Gaskets may not seat. Do not swim or shower with a replica, and do not use the crown under water.
Dial print and applied indices look close in photos. Under a loupe, the teak grooves are shallower and the lume glows for a shorter time. Date font can sit off center. Bracelet end links may sit proud of the case, and clasp engraving is shallow.
Price bands
- $70 to $150: mineral glass, quartz or 21,600 vph movement, stamped dial, light bracelet
- $200 to $400: sapphire crystal, 28,800 vph Seagull or Miyota, solid link bracelet, clean dial print
- $450 to $800: clone 8900 with decorated rotor, tighter case finishing, closer dial color
Checks before payment
- Ask for a timegrapher photo. Rate inside plus or minus 10 seconds per day and amplitude above 250 degrees is a good sign.
- Ask for case measurements with calipers. About 41 mm across and about 13 mm thick matches the genuine case.
- Watch a video of the dial, not a stock photo. Check the logo, the date font, and the teak texture.
- Check the crown. It should screw down with light pressure and no grit.
- Skip sellers who claim Swiss 1:1 and name no movement.
Legal and service limits
In the United States, trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. A first offense carries up to 10 years in prison and a $2,000,000 fine for an individual. Customs and Border Protection seizes counterfeit watch shipments at the border. Omega service centers will not work on a replica, and parts do not interchange with the genuine caliber 8900. Resale value on a replica is near zero. Treat the money as spent.