Short answer

The number 220 in "replica Omega Aqua Terra 220" points to the Omega Seamaster Aqua Terra 150M, a steel sports watch sold under references such as 220.10.41.21.03.001. A genuine 41 mm Aqua Terra runs Omega calibre 8900, a Master Chronometer movement rated to 15,000 gauss and 150 m of water resistance. A counterfeit with the same outline runs a generic automatic or quartz movement, plated metal, and no certification. The two watches share a silhouette, not parts.

What the 220 reference means

Omega builds reference numbers in blocks. The first three digits name the collection. 220 is the Seamaster Aqua Terra 150M. Later blocks cover case material, case size in millimeters, movement, and dial code. In 220.10.41.21.03.001 the "41" matches the 41 mm case diameter. Omega lists the 03 dial code as blue.

Genuine specs, 220.10.41.21.03.001

  • Case: stainless steel, 41 mm diameter, 13.2 mm thick, 20 mm lug width.
  • Crystal: domed sapphire front, sapphire caseback.
  • Movement: Omega calibre 8900, automatic, 39 jewels, 25,200 vph, 60 hour power reserve, silicon balance spring.
  • Certification: METAS Master Chronometer, 8 tests, magnetic exposure of 15,000 gauss.
  • Water resistance: 150 m.
  • Dial: teak pattern, horizontal lines, date at 6 o'clock.
  • Bracelet: steel, butterfly clasp, micro-adjust.

Where counterfeits differ

  • Movement: Asian clone or quartz. No silicon spring. Power reserve figures are claims, not measurements.
  • Case: 316L steel or plated brass. Weight sits below the genuine figure of about 170 g on a full bracelet.
  • Crystal: mineral glass or coated glass with weak anti-reflective treatment.
  • Water resistance: gaskets are untested. Swimming causes fogging and rust.
  • Certification: no METAS card, and no movement number that resolves in the Omega database.
  • Parts: crowns, gaskets, and bracelet links do not interchange with Omega parts.

US law on counterfeit watches

19 CFR 133.21 gives U.S. Customs and Border Protection authority to seize counterfeit goods at import. 18 U.S.C. 2320 makes trafficking in counterfeit goods a federal crime, with a statutory maximum of 10 years for a first offense. A sale also exposes the seller to civil claims under the Lanham Act. Trademark owners can record their marks with CBP, which then flags matching shipments.

Service and resale

Omega service centers decline counterfeits. Independent watchmakers often decline as well, because parts are unavailable. Resale value for a counterfeit is near zero, and eBay, Chrono24, and most marketplaces remove listings. Genuine 220 references keep a serviceable movement and a documented service history.

Checks before buying

  1. Match the reference number on the caseback to the dial and bracelet.
  2. Read the 8-digit movement number on the rotor and check it against the Master Chronometer card.
  3. Look at the date window. It sits at 6 o'clock on 41 mm models from 2017 and later.
  4. Weigh the watch. A full steel bracelet puts the 41 mm Aqua Terra near 170 g.
  5. Ask for service records. A METAS card proves nothing without a matching movement number.

Unknown

Omega does not publish production totals for the 220.10.41.21 series. Secondary market prices move with condition, box, and papers. No public figure covers how many counterfeits of this model exist.