What Is a Replica IW371633?
A replica IW371633 is a third-party copy of the IWC Portugieser Chronograph, a stainless steel watch with a two-register chronograph dial and a case that measures about 41 mm across. The reference sits in the 3716 family, which keeps a thin bezel, long leaf hands, and Arabic numerals on a plain dial.
A good copy matches the case size, subdial spacing, and weight of the original. A poor copy shows a thick case, blurry printing, and a rotor that rattles when you shake it.
Why This Reference Gets Copied
The Portugieser Chronograph has a plain dial, and plain dials leave no room to hide mistakes. That is why the replica market splits into clear tiers: copies that pass a glance from a meter, and copies that fail up close.
IWC sells the 3716 on leather and on steel, so replica buyers get two looks from one reference. Most listings offer both strap choices.
The vertical layout of the two registers is the part people notice first. On the original, the chronograph minutes counter sits at 12 o'clock and the running seconds at 6.
What to Check Before You Buy
Case Size and Thickness
The original measures about 41 mm wide and 13 mm thick, with 20 mm lugs. Ask for caliper photos instead of studio shots, because soft lighting hides extra bulk.
If a seller cannot state the thickness, treat the listing as low grade. Cases that run past 14 mm push the pushers up and ruin the slim profile.
- Width: about 41 mm
- Thickness: about 13 mm
- Lug width: 20 mm
- Water resistance: a claim only, treat the watch as splash proof
Dial and Subdials
Check the gap between the two registers. On the real thing they sit close to the center line, so a wide gap points to a small movement inside.
Look at the numerals under 12 o'clock. Thin, sharp strokes and even spacing mark a decent dial. Fat, fuzzy print marks a cheap one.
Compare hand lengths against the subdial tracks. Chronograph hands that stop short of the track show a copy built around a stock movement.
Movement
Three movement types show up in replica IW371633 listings, and each one feels different when you press the pushers.
- Quartz: the seconds hand ticks once per second instead of sweeping, and the pushers feel stiff.
- Basic automatic chronograph: smooth sweep, a small wobble from the rotor, and a case a touch thicker than the original.
- High-grade automatic: pusher feel and sweep closest to the real watch, plus decoration on the rotor and bridges.
Ask which movement the seller uses and how it winds. Vague answers point to quartz with a fake subdial.
Crystal, Hands, and Finish
Better copies use sapphire with a coating that cuts glare under shop lights. Mineral glass scratches within months and looks flat at an angle.
Run a thumb along the case flanks. Sharp edges on the lugs and a rough crown mean rushed machine work.
On a bracelet version, check the end links. Gaps between the link and the case, or a clasp that fails to snap shut, are common on cheap builds.
How Much Do They Cost?
Prices fall into three bands, and the band tracks the movement more than the name on the dial.
- Entry: quartz movement, mineral glass, thin case plating, printed dial that looks flat.
- Mid: automatic chronograph, sapphire crystal, solid steel case, clean dial print.
- High: decorated automatic, closer case profile, better hand finishing, lume that lasts past dusk.
Watch for sellers who show one photo set for every reference they list. That pattern points to stock images rather than the watch you receive.
Flaws That Mean You Walk Away
- A rotor that grinds when the watch turns.
- Subdial hands that fail to reset to zero.
- Pushers that stick after a few presses.
- Lume that fades in ten minutes.
- Strap stitching that pulls loose near the lugs.
Care and Service
Keep any replica away from water. Gaskets on copies are thin, and a shower can fog the crystal for good.
Give an automatic movement wrist time each week, or use a winder between wears. Quartz copies need a battery change every year or two.
Line up a watchmaker before you buy, not after. Many shops turn down replica work, so a local repair option matters.
FAQ
Is a replica IW371633 the same as the original?
No. A replica copies the look, not the movement, the materials, or the warranty. The original runs an in-house chronograph calibre and comes with factory service. A copy does not.
Can a jeweler tell the difference?
Yes, in most cases, and often without opening the case. Weight, crown feel, dial print, and hand polish give it away.
Does a replica IW371633 hold value?
No. Replica watches lose value the moment they ship, and resale is hard because buyers cannot verify the movement from photos.
What strap size fits?
The original uses 20 mm lugs, so a copy built to spec takes the same straps. Measure before you order, since some builds use 21 mm or 22 mm.
Is buying a replica legal?
Rules differ by country. Most places forbid selling counterfeit goods, and importing one can lead to seizure at customs. Check your local law before you order.
What to Do Before You Pay
Ask for a short video of the chronograph start, stop, and reset. Ask for a wrist shot next to a ruler. Ask about the return window in writing.
A seller who answers all three earns a closer look. A seller who sends stock photos and pressure to pay fast does not.