A fake IW371670 is a replica of the IWC Portugieser Chronograph, a 41 mm stainless steel watch defined by leaf-shaped hands, applied Arabic numerals and a printed railway-track minute ring. The short answer for buyers: choose a seller who publishes real movement details, true case dimensions and photographs of the actual watch rather than catalogue renders. The notes below explain what separates a convincing replica from a forgettable one.

Key Features to Look For

  • 41 mm stainless steel case with the correct Portugieser proportions and a slim, stepped bezel
  • Domed sapphire crystal with anti-reflective coating on the front
  • Printed railway-track minute ring with applied numerals at 12 and 6
  • Feuille hour and minute hands paired with two recessed chronograph sub-dials
  • Automatic chronograph movement with working pushers and a running seconds display
  • 20 mm lug width that accepts standard aftermarket straps
  • Alligator-grain leather strap with a signed folding clasp
  • Dial options including silver-plated, blue and slate finishes

Materials and Specifications

The case, crown and pushers are normally machined from 316L stainless steel with a mix of polished and brushed surfaces, and the crystal should be sapphire rather than mineral glass. Water resistance on replicas is usually rated for splashes and rain only, so keep it away from swimming and showers. The strap is typically leather or a rubber-backed leather alternative, and the folding clasp should sit flush without rattling when the watch is worn.

Shipping and Returns

Most sellers dispatch within a few business days and ship in discreet, protective packaging with tracking available. Delivery windows vary by destination, so confirm the estimated timeframe before ordering. Check that the listing states a clear return or exchange window and that the seller responds to messages, since a responsive seller is the simplest guarantee you will get if anything arrives damaged or faulty.

How close is the fake IW371670 to the original?

A good replica captures the dial layout, case size and hand shape closely, while small details such as engraving depth and sub-dial finishing will always differ on inspection.

What wrist size suits the IW371670?

At 41 mm across and roughly 13 mm thick, it wears well on wrists from about 6.5 inches upward, and the 20 mm lugs mean you can swap straps for a closer fit.

How do I check the chronograph works on arrival?

Start the chronograph, let it run for a full minute, then reset it. The hands should snap back to zero cleanly and the pushers should feel firm rather than gritty.