Replica IWC Portugieser IW371653 Review: Pick One First, Then Compare
The IW371653 is one of those IWC references that gets searched more than it gets explained. It belongs to the Portugieser Chronograph 3716 family, and the family recipe has not changed much: a 41mm steel case, two registers at 12 and 6, slim feuille hands, and a sapphire back that puts the movement on display. That last detail matters more than anything else if you are shopping the replica market. A solid caseback hides everything. A display back does not.
I keep a default answer for this one. Buy the top-tier build, or buy nothing. The middle and bottom tiers save you money on exactly the three things that make this watch read as expensive from across a table.
My pick: top-tier steel 3716, leather or bracelet
Top-tier versions of the 3716 come from the factories that treat the Portugieser line as a flagship. What you get for the money is a case with proper bevels and polished flanks, dial printing that stays sharp under a loupe, and a twin-register layout that matches the genuine watch: small seconds at 6, chronograph minutes at 12, central chrono seconds. The subdial hands are thin and correctly shaped, the numerals sit flat against the dial, and the crystal has a slight dome with an anti-reflective coating that does not turn the dial into a mirror.
Replica IW371653 vs Original: Portugieser Chronograph Compared
The strap or bracelet matters less than people think, but the case-to-lug transition does. On cheaper builds the lugs taper wrong and the strap sits at an odd angle on the wrist. It is a small thing that you notice every single time you put the watch on.
Where replicas fall apart
- Subdial function. Some builds move the running seconds to 9 o'clock, which the genuine 3716 has never done. Instant tell.
- Dial furniture. Flat, painted numerals instead of applied ones. They catch light differently and the dial looks dead.
- Hands. Too thick, too short, or the wrong finish. Feuille hands live and die by their profile.
- Caseback engraving. Shallow laser etching instead of crisp engraving, with the reference and serial fonts off.
- Chrono pushers. Mushy action, or a reset that snaps back with a visible wobble.
The movement, without the marketing
The genuine 3716 runs IWC's in-house 69355, a column-wheel chronograph with an open, industrial look and a rotor you can watch move. Replicas do not have that. What they have is a 7750-based movement dressed up with decorative plates and a rotor shaped to resemble the real thing. If a seller claims otherwise, they are lying, and that tells you what the rest of the description is worth. The upside: a 7750 derivative is easy to service, parts exist everywhere, and if it dies you are out a watch, not a down payment. I would take a well-finished 7750 build over a fragile clone any day.
Options below the top tier
The mid tier gets the outside mostly right. Case size, dial color, layout, general proportions. What it loses is finishing depth: the polishing lines are softer, the dial print has a slight fuzz at the edges, and the strap is usually the cheapest part of the package. It is a fine everyday option if you plan to swap the strap and never let anyone hold it under a lamp.
The budget tier is where I stop recommending. Not because it looks terrible in photos, since photos flatter everything, but because the chrono function is often the first casualty. A chronograph that does not reset cleanly is a broken watch with extra parts.
What I check before paying
- Video of the chrono start, stop, and reset. Not photos. Video.
- The 6 o'clock subdial running as small seconds.
- Dial photos in daylight, no filters, straight on and at an angle.
- A caseback shot, so I can judge the engraving depth.
- Case thickness against the listed spec, since thick cases are the most common giveaway.
Bottom line
For the IW371653, the top-tier 3716 build is the one I would buy, and the difference shows on the wrist, not just on the spec sheet. Dial furniture, subdial logic, and case finishing are where the money goes. If the budget is tight, wait and save rather than drop a tier on a chronograph. The movement is doing real work here, and cheap chronographs show it.