Quick answer
The IW371779 is a Portugieser chronograph, and that matters because Portugieser copies live or die on the dial. The case is a simple round shape that any decent factory can turn out. The printed track, the applied numerals, the leaf hands and the spacing of the two subdials are where the money goes. If a replica IW371779 has crisp printing, hands cut to the right length and a movement that resets cleanly to zero, it is worth owning. If any of those three is off, walk away. Everything else can be fixed or lived with.
What the watch actually is
The Portugieser chronograph is a dress watch with a stopwatch. Thin bezel, wide dial, applied Arabic numerals, a railway minute track around the outer edge, and two subdials: running seconds at 6 and the chronograph counter at 12. Leaf-shaped hands, no luminous paint, no rotating bezel, no crown guards. Some variants add a date window, and on those the cutout and the font are a common weak point in copies.
On the wrist it reads as a $7,000 watch from across a room because the dial is uncluttered. That is also why a bad copy is easy to spot: there is nothing on the face to distract the eye from sloppy work.
The dial is where replicas win or lose
I look at four things in this order.
- Numerals. They should be applied, not printed, with a visible bevel and a polished top. Cheap copies use flat stamped markers that sit too tall or too low.
- The minute track. Every tick should be evenly spaced and sharply defined. Blurry or uneven printing is the single most common flaw at the entry price.
- Hand length. The leaf hands should reach the inner edge of the track. Short hands are an instant tell.
- Subdial spacing. The two registers should sit on the vertical centerline with equal margins above and below. Any drift means the dial was printed for a different case.
Also check the text. The brand name and the wording below it should be thin, sharp and correctly spaced. Fat lettering looks wrong at arm's length even to people who do not know the model.
Case, crown and pushers
Genuine Portugieser chronographs sit around 41mm across and roughly 13mm thick. Replicas often run half a millimeter to a full millimeter thicker, and you notice it in how the watch sits under a shirt cuff. Ask for a side-on photo, not just a top-down one. The caseback should sit flush, not proud.
The crown should be signed and should feel solid when you wind it. Pushers should have a short, firm travel with a clean click. Mushy pushers point to a cheap movement or a poorly fitted stem.
Crystal matters more than people expect. The original uses a boxed sapphire with anti-reflective coating on both faces, so it nearly disappears. Many copies coat only the inside, which leaves a gray glare at an angle. It is not a dealbreaker, but it changes how the watch looks in daylight.
Movement: what is inside
Most replicas in this family run on an Asian 7750 base. It is a proven design, and a well-built one keeps decent time. The catch is the small-seconds-at-6 layout, which needs a transfer gear on top of the standard 7750 architecture. That extra gear train is the weakest part of the watch. Two practical rules follow.
- Do not leave the chronograph running all day. Stop it, reset it, and keep the sweep hand parked at 12.
- Expect that a service will cost more than the watch did. Buy it as a wearer, not an heirloom.
Some higher-tier versions use a cloned in-house-style movement or a decorated 7750 with a different bridge layout. Those usually cost more and run better, but only if the seller can tell you exactly what is inside. "Swiss movement" with no photo of the caseback is marketing, not information.
Strap, clasp and finishing
The stock strap on most copies is the first thing I replace. Look for alligator-embossed leather with even stitching and a buckle or deployant that is signed and correctly proportioned. A stamped, shiny buckle gives the watch away faster than the dial does. Brushed and polished transitions on the case lugs should be crisp, not rounded off.
What to ask the seller
- Photos of the dial straight on, from the side, and of the caseback and movement.
- The exact case diameter and thickness, measured.
- Whether the crystal has coating on both faces.
- Which movement, with a photo.
- Whether the chronograph resets to zero on video.
Anyone who will not send a short video of the chronograph starting, stopping and resetting is selling something they have not checked. That single clip tells you more than twenty glamour shots.
Price reality
Entry copies in this reference run a couple hundred dollars and look it up close. The middle tier, roughly four to seven hundred, is where dial printing and hand finishing get genuinely good. Above that you are paying for movement quality and better quality control, which is real value if you plan to wear the watch weekly rather than keep it in a box. None of these are investments. Buy the best dial you can afford and treat the rest as disposable.
Bottom line
A good replica IW371779 is a clean, quiet dress chronograph that looks right and keeps reasonable time. Judge it on the dial first, the movement second, and the strap last, because the strap is the one thing you can change in five minutes.