A replica IW371496 is a copy of the IWC Portugieser Chronograph, a 41mm stainless steel watch with a 30-minute chronograph counter at 12 o'clock, small seconds at 6 o'clock, and a Valjoux 7750-derived movement. A good replica matches the original's 41mm diameter, roughly 13.1mm thickness, 20mm lug width, and the exact spacing of the two subdials. That layout matters because the genuine IWC 79350 caliber shares its architecture with the Asia 7750 clone, so a well-built replica places the counters correctly instead of faking them.
What is the IWC IW371496?
The IW371496 belongs to the IWC Portugieser Chronograph line, reference family IW3714xx. It follows the classic Portugieser recipe: a round polished case, applied numerals, leaf-shaped hands, and a clean two-register chronograph dial with no date window. Genuine examples run the 79350 automatic movement with about 44 hours of power reserve at 28,800 vibrations per hour.
Because the design is restrained, small errors show up fast. A replica with the wrong subdial position, a thick bezel, or a printed rather than applied logo reads as fake from arm's length.
IW371496 specs a replica must match
- Case diameter: 41mm, with a height near 13.1mm on the wrist
- Lug width: 20mm, taking a tapered alligator or calf strap
- Crystal: domed sapphire, double anti-reflective coated on the front
- Water resistance: 30m on the original, rarely tested on copies
- Dial layout: 30-minute totalizer at 12, running seconds at 6
- Hands: leaf-shaped, heat-blued or gold-finished depending on the variant
Which movement powers a replica IW371496?
Most replicas use the Asia 7750, a clone of the Valjoux 7750 that IWC itself modified into the 79350. That shared base is the main reason this reference clones so well: the subdial positions come out correct by design rather than by modification. Higher tiers add a decorated rotor, blued screws, and Geneva stripes, though the finishing sits under a solid caseback and is not visible in daily wear.
Cheaper versions swap in a quartz or a 21-jewel automatic with a faux chronograph. Those show a jumping or stuttering sweep hand, and the chronograph pushers feel hollow instead of crisp.
How to judge replica quality tier
Tier one copies sit around $80 to $150 and usually miss the case thickness and dial printing. Mid tier runs $200 to $350 with a working Asia 7750, sapphire glass, and decent strap hardware. Top tier goes higher and focuses on case profile, hand finish, and dial texture.
- Check the case side profile: it should taper, not look like a slab
- Look at the dial printing under a loupe for crisp, raised text
- Press each pusher: a real chronograph starts and resets with a firm click
- Weigh it: a 7750-based case feels dense, a quartz copy feels light
Dial, hands and crystal details to inspect
The Portugieser dial is where replicas are won or lost. Applied numerals should sit flush with clean edges, and the minute track should be sharp and evenly spaced. Subdial rings need a subtle concentric texture, not a flat printed circle.
On the crystal, look for a blue or purple sheen when tilted under light, which signals anti-reflective coating. Bare, mirror-bright glass is a common shortcut on budget copies.
Strap, clasp and caseback
Genuine IW371496 variants ship on alligator leather with a steel pin or folding clasp, and the strap tapers from 20mm at the lugs to about 18mm at the buckle. Replicas often use embossed cowhide that looks plasticky and creases badly within weeks. Upgrading to a third-party alligator or shell cordovan strap is the single biggest visual improvement you can make.
The caseback should carry engraved reference text and a serial in a clean font. Laser-printed or blurry engraving is a fast tell.
Frequently asked questions
Is a replica IW371496 worth buying?
It can be, if you want the Portugieser look without the five-figure price and accept that the movement, finishing, and warranty are not comparable. Mid-tier and top-tier copies deliver the proportions and dial presence that budget versions miss.
Does the replica IW371496 have a working chronograph?
Automatic 7750-based replicas do, with a functioning 30-minute counter and reset-to-zero pusher. Quartz and low-grade copies often use decorative subdials that never move.
How long does a replica IW371496 last?
An Asia 7750 that is worn daily typically needs service or replacement within three to five years. Rotating it with other watches and avoiding water exposure extends that window.