The best replica IW371759 to buy is the automatic chronograph version with a working chronograph, a correctly stepped case profile, and overall dimensions that land within roughly half a millimeter of the genuine spec. The criteria that decide it are case diameter and thickness, lug width, dial furniture and printing, crystal clarity and coating, chronograph feel, and strap construction. The sections below explain how each tier performs and which buyer it suits.

Verify the reference before you judge any copy

The IW371759 sits in the Portugieser Chronograph family, and that matters because replica makers rarely tool a case for one reference alone. A single case and dial set often gets reused across several neighboring Portugieser references. Before you compare sellers, pull the official spec sheet and write down four numbers: case diameter, case thickness, lug width, and the dial layout of the subdials and date.

Then measure the copy you are considering. If the seller cannot give you caliper photos of the case and lugs, treat the listing as unverified. Most disappointing replica purchases on this reference come down to a case that is a millimeter too thick or a lug width that forces you into the wrong strap size.

Tier one: automatic chronograph on a modified 7750 style movement

This is the top pick for anyone who wants the watch to behave like a mechanical chronograph. The movement is a modified workhorse chronograph caliber, which gives you a sweeping chronograph seconds hand, a real pusher feel, and a running seconds subdial that ticks rather than sweeps in one-second jumps.

• Pros
  • Mechanical chronograph operation with a genuine reset feel
  • Correct case thickness more often than quartz builds
  • Subdial spacing usually closer to the genuine dial
  • Accepts standard aftermarket straps in the correct lug width
• Cons
  • Heavier and thicker than a quartz copy
  • Needs servicing eventually, and a local watchmaker may refuse the work
  • Costs noticeably more than the other tiers
  • Rotor noise is audible in quiet rooms

Buy this if: you wear the watch daily, you care about pusher feel, and you are willing to accept mechanical maintenance.

Tier two: quartz and meca quartz copies

Quartz versions are the budget route and the most common failure point for the reference. The case is often a generic chronograph shell with a printed dial, which means subdial positions and hand lengths drift from the genuine design.

• Pros
  • Lowest cost and easiest to replace
  • Accurate timekeeping with almost no maintenance
  • Thin case profile on the better meca quartz builds
  • Good option for a costume or one-event wear
• Cons
  • Chronograph seconds hand often ticks instead of sweeping
  • Subdial placement frequently wrong
  • Cheap plating on the case and buckle
  • Dial printing looks flat under angled light

Buy this if: the watch is for occasional wear, a gift, or a first experiment with the reference before committing to a mechanical build.

Tier three: decorated display chronographs

A small number of sellers push heavily decorated movements and engraved rotors. The visible side is often excellent. The problem is that the decoration hides what the base movement actually is, and the price jumps without any improvement in timekeeping.

• Pros
  • Strong caseback presentation if you like showing the watch
  • Better finishing on bridges and screws
  • Often paired with sapphire crystal and solid end links
• Cons
  • Hard to verify what sits under the decoration
  • Premium price with no accuracy gain
  • Servicing becomes harder once cosmetic plates are involved

Buy this if: you mostly look at the caseback and already own a reliable daily watch.

Five checks that decide quality on the IW371759

1. Case profile. Look at the lug curve and the caseband step in a side photo. Flat lugs are the fastest tell.
2. Dial print. Indexes should be applied, not printed, and the text should sit on a consistent baseline.
3. Subdial hands. The chronograph counter hand length should reach the minute track, matching the running seconds hand.
4. Crystal and coating. A blue or purple tint under indoor light means a cheap coating.
5. Strap or bracelet. Stitching should be even, and the buckle engraving should be crisp rather than shallow.

Which one to buy

Choose the automatic modified chronograph tier if the watch will be worn often and you want correct proportions. Choose quartz if budget and low maintenance matter more than chronograph behavior. Skip the heavily decorated tier unless the caseback is the point. In every case, request caliper measurements and a straight-on dial photo before paying, and confirm the return policy covers a watch that arrives with a misaligned subdial hand.