A replica IW371651 is a copy of the IWC Portugieser Chronograph 41, a 41mm steel chronograph with a two-register dial and a 46-hour automatic movement. Good copies match the case profile, the leaf hands, and the spacing between the two subdials. Weak copies get the subdial depth, the date window, or the crown size wrong, and those faults read from across a table.
What Is the IW371651 Reference?
IW371651 sits in the 3716 family of IWC Portugieser Chronographs. That family runs a 41mm steel case, a domed sapphire crystal, and a dial with a 30-minute counter at 12 o'clock plus running seconds at 6.
Codes in this family change with dial color, strap, and market. Before you buy a replica, confirm that the dial finish and strap on the listing match the reference you want.
- Case: stainless steel, 41mm wide, about 13mm thick
- Lug width: 20mm
- Crystal: domed sapphire with anti-reflective coating
- Movement: IWC calibre 69355, automatic, 46-hour power reserve
- Water resistance: 30m (3 bar)
- Dial: applied Arabic numerals, leaf hands, subdials at 12 and 6, date at 3
- Strap: alligator leather or a steel bracelet, depending on the version
What Quality Tiers Do Replica IW371651 Watches Come In?
Sellers split their stock into tiers, and the tier decides the movement, the finishing, and the price. Ask which tier a listing belongs to before you compare prices between two sellers.
Entry tier
Entry copies run a quartz movement or a basic Asian automatic. The dial printing looks flat, the subdial rings sit too high, and the case edges are sharp. These sell for well under $200 and often fail within a year of daily wear.
Mid tier
Mid tier copies use a 7750-style automatic chronograph with a working chrono function. Case finishing improves, the dial gets better printing, and the crystal is sapphire instead of mineral glass. Expect a case about 1mm thicker than the real watch, because the movement is taller.
Top tier
Top tier copies aim at the closest match: 41mm case, 20mm lugs, recessed subdials, and a dial with the right font weight. Some use a modified Asian 7750 with decoration that mimics the look of the 69355. Prices land in the $400 to $700 range from most sellers.
Note that the genuine reference uses a solid case back. A copy with a glass back is not built around the real layout, so treat that as a sign the seller is guessing.
How Do You Spot a Weak Replica IW371651?
- Subdial spacing: the two subdials should sit on one vertical line with even gaps to the bezel. Copies built on a stock 7750 sometimes push them apart.
- Date window: sharp edges, correct position at 3, and no white border around the cutout.
- Hands: leaf shape, polished edges, and a length that reaches the minute track.
- Case profile: the lugs curve down and the case sides taper. A slab-sided case is a tell.
- Crown: correct size with no gap between the crown and the case.
- Text: the brand and city print is thin and crisp, not bold or smudged.
- Pushers: a firm click, no wobble, and a minute counter that jumps once per minute.
What Movement Sits Inside a Replica IW371651?
Most copies run one of three movements: a quartz module, an Asian 7750 clone, or a modified 7750 with cosmetic changes. The Asian 7750 keeps the chronograph working and the subdials moving, which is the main reason sellers charge more for it.
No replica uses the real 69355. IWC does not sell that calibre to third parties, so a listing that claims a genuine IWC movement is not telling the truth. Ask for a photo of the movement or a video of the chronograph running instead.
Which Details Decide How the Copy Looks on the Wrist?
The dial is where the money shows. Look at the subdial rings, the weight of the print, and the color of the hands against the dial.
- Dial color should match the reference you asked for, not a generic blue or silver.
- Subdial rings should be thin and recessed, not printed flat on the dial.
- Numerals should be applied metal, not paint.
- Crystal should sit close to the bezel with no cloudy edge.
- Strap should meet the 20mm lugs with no gap at the spring bars.
QC Checklist Before You Pay
Ask for photos on a plain background, a close shot of the dial, a side profile, and a video of the chronograph running. A seller who refuses a QC video is a risk you do not need to take.
- Confirm the case measures 41mm if the seller will show calipers in the photo.
- Check that both subdials reset to zero.
- Look for dust under the crystal and scratches on the case back.
- Check that the date flips at midnight and sits centered in the window.
- Confirm 20mm lug width, since every aftermarket strap depends on it.
What Does a Replica IW371651 Cost?
Prices track the movement and the finishing. A quartz copy costs the least, an Asian 7750 copy costs more, and a top tier copy with decoration costs the most.
- Quartz or basic automatic: about $80 to $180
- Asian 7750 with sapphire: about $200 to $380
- Top tier with decorated movement: about $400 to $700
A seller who quotes a top tier price for a quartz watch is padding the margin. Compare the same tier across three sellers before you commit.
Frequently Asked Questions
Is the replica IW371651 the same size as the real watch?
Top tier copies hit 41mm across and 20mm between the lugs. Entry copies often run 1mm to 2mm wider, because the movement is taller and the case has to grow with it.
Does the replica chronograph work like the original?
Copies with an Asian 7750 run a real chronograph: start, stop, and reset all function, and the 30-minute counter at 12 tracks elapsed time. Quartz copies drive the subdials from the battery, so the hand sweep looks wrong.
What is the biggest giveaway on a replica IW371651?
The dial print and the subdial depth. Thick, blurry text and flat subdials show from normal conversation distance, while case size and strap faults need a closer look.
Should I buy the leather strap version or the bracelet version?
Match the reference you want, then add a second strap later. Both use 20mm lugs, so a leather strap and a steel bracelet swap with nothing more than a spring bar tool.