A replica IW371752 is a copy of the IWC Portugieser Chronograph, a 41 mm steel watch with two subdials sitting at 12 and 6 o'clock and no date window. The best copies match the case size, the subdial spacing, and the leaf-shaped hands. Weak copies get the thickness, the movement layout, or the dial printing wrong.

What Is the IW371752?

The IW371752 reference sits in the Portugieser Chronograph line, IWC's two-register chronograph family. The genuine watch pairs a slim steel case with a wide, clean dial, applied markers, and leaf hands. It is a dress chronograph, not a dive watch, so the profile is thin and the bezel is almost flat.

These are the specs a replica has to copy:

• Case: stainless steel, 41 mm across, around 13 mm thick.
• Dial: two registers. Elapsed minutes at 12, running seconds at 6. No date.
• Hands: leaf shaped, with slim applied markers and a printed minute track.
• Crystal: domed sapphire with anti-reflective coating on both faces.
• Movement: a chronograph caliber visible through a sapphire caseback.
• Water resistance: 3 bar on the genuine watch, which means splashes only.

That last point matters for buyers. A 3 bar rating is not a swimming rating on the real watch, so no replica of this reference should ever see a pool.

What Separates a Top Replica From a Cheap One?

Photos hide flaws. Case finishing, dial depth, and movement behavior are what decide the price tier.

Case and profile

A good case has crisp polished flanks and a brushed caseback rim, with lugs that curve down toward the wrist. The crown should sit flush against the midcase, not float above it. Cheap cases feel light and the lugs are often too thick or too straight.

Dial and subdials

The subdials must sit on the vertical center line, spaced the way the genuine dial spaces them. Look at the gap between the two registers and the center pinion. A copy with subdials crowding the middle or drifting off-center looks wrong from arm's length.

Movement

This is where most of the money goes. See the movement section below for the full breakdown.

Crystal and strap

A domed sapphire crystal with a slight edge distortion reads like glass; flat mineral glass reads like plastic. The strap should be alligator-grain leather with a signed buckle, and the stitching should be tight and even.

Which Movement Sits Inside a Replica IW371752?

Movement choice drives both the price and the accuracy of the chronograph. Replicas of this reference come in three broad groups.

• Quartz: the seconds hand ticks instead of sweeping. Avoid these.
• Asian 7750 based: sweeps at 28,800 vibrations per hour and runs a real chronograph. Rotor noise is common.
• Swiss or Swiss-clone 7750 based: closest to the genuine feel, with smoother pusher action and steadier timekeeping.

One layout detail trips up buyers. A stock Valjoux 7750 puts running seconds at 9 o'clock and a 12-hour counter at 6. The genuine IWC caliber 79350 reworks that into elapsed minutes at 12 and running seconds at 6. A replica built on an unmodified 7750 will not match the real subdial layout, so ask the seller to confirm which register does what before you pay.

How Do You Spot a Low-Quality Copy?

Run through this list before you commit to a purchase.

• Ticking seconds hand, which points to a quartz movement.
• A date window at 3 o'clock. The reference has no date.
• Dead subdials, where the hands move only with the time, not the chronograph.
• A case that measures 43 mm or more across.
• Crooked or shallow caseback engraving.
• Misaligned markers that sit off the minute track.
• Stiff pushers that need real force to start and reset.

What Should a Replica IW371752 Cost?

Price tracks the movement, not the listing photos. Entry pieces with quartz movements sell for a small fraction of the top tier, while Swiss-movement copies land in the low hundreds of dollars. Any seller charging top-tier money for a quartz watch is overcharging.

Ask three questions before buying: which movement is inside, what the case measures, and whether the chronograph registers match the genuine layout. Sellers who answer all three in specific terms are the ones worth dealing with.

Frequently Asked Questions About the Replica IW371752

Does the chronograph work on the replica?

On 7750-based copies, yes. The pushers start, stop, and reset the center seconds hand, and the register at 12 counts elapsed minutes. Quartz copies often fake this with a sweep hand that does nothing.

Can I swim with it?

No. The genuine watch is rated to 3 bar, and replicas add case gasket variance on top of that. Keep it away from showers, pools, and dishwater.

Will people notice it is a replica?

From a distance, no. Up close, a trained eye checks the subdial layout, the crystal clarity, and the movement through the caseback. Those three points are where the money shows.

How close is it to the genuine watch?

A top-tier copy gets the dimensions, the dial layout, and the finishing right. It will not match the hand-finished movement of the original. Treat it as a look-alike, not a substitute.

Which strap ships with the replica?

Most sellers ship alligator-grain leather with a steel pin buckle. Some include a second strap. Check the lug width before you buy an aftermarket strap, since the genuine watch uses a 20 mm fitting.