The top pick for most buyers is the stainless steel replica of the IW371482 running an Asia 7750 automatic chronograph, because it is the one common version that reproduces the real watch's 40.9 mm case, the small seconds at 6 o'clock, the 30 minute counter at 12 and the date at 3 in a single package. Everything below is judged on five things that decide whether a first copy watch reads as the real thing on a wrist: case diameter and thickness, subdial placement, dial printing and applied markers, movement type, and the strap and buckle pairing.
The reference you are matching
The IW371482 belongs to the Portugieser Chronograph family: a stainless steel case of about 40.9 mm, a silver toned dial with applied markers and leaf shaped hands, small seconds at 6, a 30 minute chronograph counter at 12, and a date window at 3. The real watch uses calibre 79350, a Valjoux 7750 base that IWC reworked. Those dial features, plus a case close to 12 mm thick and a 20 mm lug width, are the fixed points any replica has to hit. Miss one and the watch looks off from across a table, no matter how good the polishing is.
Top pick: Asia 7750 automatic in steel
This is the version to start with. The 7750 layout is the same family the original movement comes from, so the subdial positions and the running seconds at 6 land where they should instead of being pushed toward the edges of the dial.
- Pros: correct subdial and date layout, working chronograph with a sweeping seconds hand, case thickness close to the original, takes standard 20 mm straps, any competent watchmaker can service the movement.
- Pros: the date font and window position on the better batches match the reference closely, which is the detail most people get wrong when they buy on price alone.
- Cons: some batches run a millimeter or so thicker than the real case, so check side profile photos before paying.
- Cons: rotor noise is common, and the movement finishing visible through the caseback will not fool anyone who knows what calibre 79350 looks like.
- Cons: water resistance claims are marketing. Treat it as splash resistant at best.
Best for: daily wear, buyers who want a functioning chronograph and correct proportions, and anyone who plans to keep the watch for years.
Quartz versions
Quartz replicas of the Portugieser Chronograph are cheaper and thinner, and that thinness is the whole argument for them.
- Pros: low cost, low maintenance, accurate timekeeping, case profile that sits flat under a cuff.
- Cons: subdials are often decorative or repurposed as a 24 hour hand, so the chronograph does not work.
- Cons: the chronograph seconds hand ticks instead of sweeping, and the pushers feel hollow.
- Cons: the hand stack sits at the wrong height, which shows in the gap between the hands and the dial.
Best for: occasional wear on a tight budget, or buyers who want the look and never touch the pushers.
Listings sold as Swiss movement or premium tier
Some sellers charge a large step up for what they describe as a Swiss or Swiss parts movement. Sometimes that is a real ETA 7750; often it is the same Asia movement with a different label.
- Pros: when the claim is true, you get better finishing, quieter winding and easier servicing.
- Pros: premium batches often get the best dial printing and the cleanest case brushing.
- Cons: the label is unverifiable from a product page, and the price jump rarely matches the improvement.
- Cons: returns get harder once a seller has sold you a "premium" tier.
Best for: buyers who can request clear movement photos and have a watchmaker confirm the rotor and balance before the return window closes.
What to check before you pay
- Subdial spacing. The two counters should sit close to the center line, not pushed toward 3 and 9.
- Date window. Position at 3, font weight matching the reference, no white plastic ring around the aperture.
- Dial print. Thin, sharp lettering. Thick print is the fastest giveaway at arm's length.
- Applied markers. Faceted edges that catch light, seated flat with no glue visible.
- Case profile. Ask for a side photo. The lugs should curve, not slab straight down.
- Caseback engraving. Depth and crispness of the reference text, plus the correct reference number.
- Strap and buckle. 20 mm lug width, stitching density, and an engraving that is cut rather than stamped.
Alternatives worth comparing
If the goal is the Portugieser look rather than this exact reference, the steel and black dial 3714 variants and the newer 3716 with the in-house chronograph movement are both worth pricing. The 3716 has a different subdial arrangement, so a replica of it fails in different ways. If what you actually want is a visible movement through a sapphire back, a hand wound dress chronograph replica will satisfy you more than any closed case design.
Who each version suits
Buy the 7750 steel version if you wear the watch often and care that the chronograph works. Buy quartz if the watch is a costume piece for a few evenings a year. Pay for a premium tier only when the seller will show you the movement and stand behind a return. In every case, ask for in hand photos of the actual unit, not catalog renders, and confirm the case diameter and lug width in writing before you pay.