Answer first
A "replica IW329078" is a counterfeit copy of an IWC Aquatimer Automatic. Reference IW329078 sits in the IW3290xx block: 42 mm stainless steel case, 300 m water resistance rating, rotating dive bezel, rubber strap or steel bracelet, IWC calibre 30120 inside. No replica ships that calibre. The copy puts a third-party movement in a case built to mimic the original dimensions.
Genuine baseline specs
- Case: stainless steel, 42 mm wide, roughly 14.5 mm thick
- Water resistance: rated 300 m
- Movement: IWC calibre 30120, automatic, 4 Hz, about 42 hours of reserve
- Crystal: sapphire with antireflective coating
- Strap: rubber or steel, depending on the variant
Public catalog pages for this exact reference number are thin. Confirm case size and bezel style from photos before you compare anything else.
What replica makers change
Three parts carry the cost. Movement first: most copies run an Asian clone of the ETA 2824-2 or a Seagull ST2130, both 4 Hz, both near 38 hours of reserve. Second, finishing: case bevels, crown guards, bezel grip, and date window position shift between batches. Third, sealing: sellers print 300 m, but independent pressure tests on copies commonly fail past 3 atm, or 30 m. Treat any dive rating on a replica as unverified.
Price bands and jargon
Listings use tiers. "AAA" and "1:1" describe cosmetic grade, not materials. "Swiss made" on a replica usually means a Swiss-branded movement blank assembled elsewhere, if it means anything. Prices for this model class run about $150 to $400. Above that, the extra money buys marketing.
How to read a listing
- Ask for a movement photo with the caseback removed. Catalog images are not proof.
- Compare lug width and case thickness against the 42 mm original.
- Ask for a pressure test result if you plan to swim with it.
- Check date font and cyclops position. Those are the common tells.
Legal position in the United States
Importing, selling, or trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. U.S. Customs and Border Protection seizes counterfeit watches at ports and mail facilities. A personal-use purchase is not the same charge as resale, but the shipment can still be seized and destroyed.
Short answers
Does a replica IW329078 keep time? Most run within plus or minus 20 seconds a day when new, then drift.
Can it be serviced? Independent watchmakers will usually touch a 2824 clone. Parts come from aftermarket suppliers, not from IWC.
Is it worth the money? That depends on whether you want the outside of a 42 mm Aquatimer or a working dive watch. Those are two different purchases.