Short answer

A replica IW371632 is a third-party copy of an IWC Portugieser Chronograph. Replica makers do not publish spec sheets. Two batches of the same model can differ in case size, dial print, and movement. Ask for measurements and photos of the actual watch before payment.

The genuine reference

IWC groups reference IW371632 in the Portugieser Chronograph 41 family. The family launched in 2020. Shared specs:

  • Case diameter: 41 mm
  • Case material: stainless steel on most variants
  • Movement: IWC calibre 69355, automatic, column wheel chronograph
  • Power reserve: about 46 hours
  • Beat rate: 28,800 vibrations per hour, 4 Hz
  • Water resistance: 3 bar, 30 meters
  • Crystal: sapphire, front and back
  • Dial: two counters, small seconds at 6, chronograph minutes at 12, no date

Dial color and strap change across the 3716 family. Confirm the exact configuration of IW371632 with IWC or an authorized dealer before you compare a replica to it.

Common faults in replicas of this model

  1. Subdial spacing. Genuine counters sit at 6 and 12 on a 41 mm dial. Copies built on a Valjoux 7750 base or a quartz base move them.
  2. Case thickness. The genuine case is about 13 mm. Copies measure thicker.
  3. Movement. No replica uses calibre 69355. Most use a Chinese automatic chronograph with a decorated rotor.
  4. Dial print. Font weight, letter spacing, and the IWC mark differ.
  5. Caseback engraving. Depth and font of the reference number.
  6. Strap and bracelet fit at the lugs.

Movement facts to check

Calibre 69355 is an in-house IWC movement. It winds in one direction, runs at 4 Hz, and holds about 46 hours. A replica movement will not match those numbers. Ask the seller for a photo with the caseback removed and a video of the chronograph start, stop, and reset.

Tiers and price

Seller labels such as AAA and super clone have no standard definition. Price bands change by seller and are unverified. A higher price does not confirm accuracy.

Legal status in the US

Counterfeit watches infringe IWC trademarks. US Customs and Border Protection can seize counterfeit goods at import. 18 U.S.C. 2320 targets trafficking, not a single personal purchase, but seizure at the border still applies.

How to compare before buying

  • Ask for caliper photos of case diameter and thickness.
  • Ask for a movement photo.
  • Compare dial photos against the IWC product page for the same reference.
  • Check lug width and strap hardware.

Bottom line

No replica IW371632 matches the genuine watch part for part. The gap shows in the movement, case thickness, and dial print. Verify specs from IWC, not from a seller listing.