A replica IW371445 is a copy of the IWC Portugieser Chronograph ref. IW371445, a 40.9 mm stainless steel watch with a silver-plated dial, applied gold numerals, and a two-register chronograph layout. The better replicas use a 7750-based automatic movement, which mirrors the architecture of the genuine calibre 79350. Expect to pay roughly $280 to $500, and ask for photos of the actual watch before you pay.
What is the IW371445?
Ref. IW371445 is a Portugieser Chronograph from the ref. 3714 family: steel case, silver dial, gold applied numerals, feuille hands, and a black alligator strap. It carries calibre 79350, a Valjoux 7750 base reworked by IWC, with running seconds at 6 and a 30-minute counter at 12. A small date window sits at 3 o'clock.
The case measures about 40.9 mm across and roughly 12.3 mm thick, and water resistance is rated at 30 m. Those numbers matter because they are the first things a replica gets wrong.
Why the IW371445 is easier to replicate than most dress chronographs
The genuine movement is a modified 7750, so a replica built on the same base gets the subdial spacing and pusher feel right without a custom module. That is rare in this price bracket, where most chronographs need a spacer or a fake layout. The trade-off is thickness: replica cases often land at 13 mm or more.
What separates a good replica IW371445 from a cheap one?
Dial and printing
- Numerals should be applied and gold-toned, not printed flat.
- The "IWC Schaffhausen" signature must be crisp, correctly weighted, and evenly spaced.
- Subdial rings should be thin and concentric; thick printed rings are a giveaway.
- Leaf hands need a clean curve and correct length, reaching just inside the minute track.
Case and crystal
Check the lug shape, the polished bezel bevel, and the crown engraving. Genuine watches have anti-reflective coating on both sides of the sapphire, so a replica with heavy glare is a lower tier. Caseback engraving depth and font also separate tiers.
Movement
The standard option is a Chinese A7750, which keeps correct subdial positions at the cost of a slightly noisier rotor. Upgraded versions use a decorated clone with gold-toned rotor engraving. Ask the seller which one is inside, and ask for a photo of the movement.
Strap and clasp
Most replicas ship with generic leather, so budget for a replacement strap. The deployant clasp should be signed and should lock with a firm click.
What does a replica IW371445 cost?
- Entry tier, around $150 to $250: printed dial details, thick case, basic 7750.
- Mid tier, around $280 to $380: applied numerals, better crystal coating, correct 40.9 mm case.
- Top tier, around $400 to $500: closer dial printing, decorated movement, improved hands and strap.
Prices above the top tier buy diminishing returns on this model, because the dial is simple and there is no complex case geometry to copy.
QC checklist before you accept the watch
- Confirm the case measures 40.9 mm, not 42 mm.
- Photograph the chronograph running: the 30-minute counter must advance smoothly.
- Reset the chrono and confirm both hands snap back to zero.
- Check date change at midnight and crown positions.
- Inspect the dial under angled light for dust, off-centre subdials, or misaligned markers.
What a replica IW371445 cannot do
It is not a genuine IWC, it carries no manufacturer warranty, and it has no resale value in the authorised market. Water resistance on replicas is not tested to the rated 30 m, so keep it away from swimming and showers. Selling it as genuine is trademark infringement in most jurisdictions.
Frequently asked questions
Is the replica IW371445 a true 1:1 copy?
No. It is a close visual approximation, and case thickness plus dial printing are the usual tells under close inspection.
Does the replica use the same movement as the genuine watch?
It uses a 7750 base, which is the same family as calibre 79350, but the finishing, regulation, and parts quality are not equivalent.
Can I wear a replica IW371445 while swimming?
Do not. Gaskets on replicas are not pressure tested, and 30 m on the genuine watch is already only splash resistance.