The replica IW371628 is a copy of the IWC Portugieser Chronograph 41 mm, a stainless steel bicompax chronograph that runs IWC's in-house calibre 69355. Anyone shopping for a replica IW371628 should judge the watch on case finishing, dial printing, subdial spacing, and movement type instead of relying on seller photos alone. Because the reference sits inside a large IW3716 family, the exact dial and hand combination matters as much as the model name.

What the IW371628 reference actually is

The Portugieser Chronograph 41 is one of IWC's most recognized designs, and replicas of it are common. The genuine watch sets the benchmark that any copy is measured against:

  • Case: roughly 41 mm in diameter and about 13 mm thick, in stainless steel, with a narrow bezel and long, straight lugs.
  • Dial: two subdials, a 30-minute chronograph totalizer at 12 and running small seconds at 6, with a date window at 3.
  • Markers: applied Arabic numerals, a printed minute track, and leaf-shaped hands.
  • Movement: calibre 69355, an in-house automatic chronograph with a column wheel and about 46 hours of power reserve.
  • Crystal and back: sapphire on both sides, with an exhibition caseback showing the movement.
  • Water resistance: rated at 3 bar, which is splash resistance rather than swimming territory.

The suffix digits in the IW3716 family denote dial color, hand finish, and strap pairing. Confirm the specific variant you want against reference photography before ordering, since sellers often reuse a single set of images across several references.

Quality tiers in the replica market

Replica Portugieser chronographs sit in three broad bands, and the gaps between them show up on the wrist rather than in listings.

  1. Entry tier: mineral glass, flat printed dials, stamped rather than applied numerals, and a basic quartz or low-grade automatic movement. Subdial positions are often wrong.
  2. Mid tier: sapphire crystal, applied markers, a decorated Valjoux 7750 base movement, and acceptable case brushing. The case usually runs noticeably thicker than the original.
  3. Top tier: a clone or heavily modified 69355 layout, column wheel chronograph actuation, anti-reflective coating on both crystal faces, polished bevels along the lugs, and a properly recessed date window.

What to verify before you pay

Ask for close-up photos and a short video of the chronograph starting, running, and resetting. Then work through this checklist:

  • Case profile: brushing should run in one direction on the lugs, with crisp polished edges and no soft, rounded corners.
  • Dial print: the brand text must be sharp under magnification, the minute track even, and the subdial rings concentric.
  • Hand length: the leaf hands should reach the minute track without overhang, and the chronograph hand should reset to zero every time.
  • Subdial placement: the 12 and 6 positions should mirror the genuine layout, since a shifted subdial is the clearest sign of a mismatched movement.
  • Movement view: check rotor engraving, bridge finishing, and whether the chronograph uses a column wheel or a simple cam.
  • Crystal: reflections should be muted, which signals coating on the outside as well as the inside.
  • Strap and clasp: stitching density and the shape of the deployant are easy places for a maker to cut corners.

Movement choices and how they feel

Most replicas of this reference use a modified Valjoux 7750 base, which is robust and cheap to service but adds case height and can show a slight stutter in the small seconds. Higher-grade copies use a clone of the 69355 layout with a column wheel, giving a lighter pusher feel and a smoother chronograph engagement. Wind the watch by hand and start the chronograph before buying; a gritty pusher or a wobbling rotor is a warning sign at any price.

Price expectations and risk

Pricing across replica listings varies widely, from very cheap quartz versions to several hundred dollars for the best-finished automatics. Treat any quoted figure as a starting point and compare several sellers offering the same specification. Keep in mind that counterfeit watches infringe registered trademarks, that customs authorities in the United States and the European Union can seize shipments, and that no replica carries a manufacturer warranty or holds resale value. Budget for a service or a strap replacement, because neither is covered by the seller in most cases.

Quick answers

Is the replica IW371628 the same size as the original?

Good copies match the roughly 41 mm case, but thickness is where replicas usually differ. Measure the case height if the seller publishes it.

Which detail exposes a low-quality copy fastest?

The dial. Soft printing, flat numerals, and off-center subdials are visible at arm's length, long before anyone inspects the movement.

Can a replica chronograph be serviced?

A watchmaker can service a 7750-based copy without much trouble. Clone in-house layouts are harder to source parts for, so ask about movement availability first.