The replica IW371681 is a counterfeit version of the IWC Portugieser Chronograph, a 41 mm stainless steel chronograph with a vertical two-register dial. Buyers judge these copies on case thickness, subdial position, dial printing, and movement type, not on the name engraved on the rotor. This guide covers what the genuine reference looks like and how to separate a well-built copy from a cheap one.
What Is the IWC IW371681?
IW371681 sits in the IWC Portugieser Chronograph family, the 3716 series that IWC refreshed in 2019 with an in-house movement.
The watch uses a 41 mm stainless steel case, a sapphire crystal, and a bicompax layout with the 30-minute counter at 12 o'clock and small seconds at 6 o'clock. The calibre 69355 is an automatic column-wheel chronograph with about 46 hours of power reserve.
Because the dial is simple and legible, the Portugieser Chronograph is one of the most frequently copied IWC models.
What Should You Check First on a Replica IW371681?
Case size and thickness
Measure the diameter if you can. The target is 41 mm, and the case should sit near the genuine 13 mm profile. Copies that measure 14 mm or more look bulky under a shirt cuff, and that extra height is the most common giveaway.
Lug width, lug curve, and crown size should match the official spec sheet for the reference.
Dial, hands, and subdials
- Subdial centers must sit at 12 and 6, in line with the crown, not offset.
- Printed text should be crisp, evenly spaced, and free of bleeding at the edges.
- Leaf-shaped hands should reach the outer track, and subdial hands should not overhang.
- Sunburst or lacquer finishes should shift tone in light rather than look flat.
Movement
High-tier replicas use a clone or a decorated automatic chronograph movement with the running seconds relocated to 6 o'clock. Relocation relies on extra transfer gears, and that part tends to fail first.
Ask the seller for a movement photo, a timing reading, and a video of the chronograph starting, stopping, and resetting to zero.
Crystal, case back, and finishing
Genuine sapphire shows a slight blue or purple anti-reflective tint at an angle, while mineral glass looks darker or hazier.
Case back engraving should be sharp and aligned, and the flanks should show vertical brushing with polished chamfers.
How Much Does a Replica IW371681 Cost?
Sellers typically quote three tiers. Entry quartz copies run about 60 to 150 US dollars, mid-tier automatic copies run about 250 to 450, and high-end automatic copies with a cloned movement run 500 to 900.
Price alone proves nothing. A 400 dollar copy with correct dimensions beats a 700 dollar copy with a thick case and misaligned subdials.
How Do You Vet a Seller?
- Request QC photos of the actual unit, not catalog images.
- Ask for a timestamped video showing the second hand sweeping and the chronograph resetting.
- Confirm the return window and who pays return shipping.
- Check for reviews hosted outside the seller's own domain.
- Walk away from any seller who refuses a payment method with buyer protection.
Stock photos, pressure to pay within minutes, and prices far below the tier norm are classic warning signs.
Is Buying a Replica IW371681 Legal in the United States?
Trafficking in counterfeit goods is illegal under US federal law, and US Customs and Border Protection can seize counterfeit watches at import. Personal possession is treated differently from importing or reselling at scale, but the risk is real.
A replica carries no manufacturer warranty, no service network, and no resale value. Treat the money as spent.