The IW371633 is a reference in the IWC Portugieser Chronograph line, and a replica IW371633 is a counterfeit copy of that watch, not a licensed or factory-second product. Replicas shipped from China match the dial layout and case outline at a fraction of the price, but they carry a non-original movement, lower-grade finishing, and no IWC warranty, serial registration, or service support. Importing or reselling one in the United States is a trademark violation that can end in seizure, fines, or criminal charges.
What is reference IW371633?
IW371633 belongs to the IW3716 Portugieser Chronograph family, a 41 mm automatic chronograph that IWC has produced in several dial, strap, and case-metal combinations. The final digits of the reference identify the specific configuration, so two watches with the same case size can differ in dial color, hands, and bracelet. Core specifications stay consistent across the family.
- Case: 41 mm stainless steel, roughly 13 mm thick, water resistant to 3 bar
- Movement: IWC caliber 69355, automatic chronograph, about 46 hours of power reserve
- Display: chronograph minutes at 12, small running seconds at 6, date at 3
- Crystal: sapphire front and back, anti-reflective coating on both faces
- Strap options: alligator leather or steel bracelet depending on the variant
Why do replica IW371633 listings exist?
The Portugieser Chronograph is a clean, legible design that is easy to photograph, which makes it a favorite target for counterfeit workshops in Guangzhou and Shenzhen. Sellers use the exact reference number in listing titles to catch search traffic from buyers who are comparing prices. Those listings rarely show the movement, the case back engraving, or the clasp in detail.
How can you tell a replica IW371633 from a genuine IWC?
Counterfeit Portugieser chronographs fail on the parts that are hardest to copy: the movement, the finishing, and the documentation.
Movement and chronograph behavior
Genuine IW3716 watches use IWC caliber 69355, an in-house automatic chronograph. Replicas rely on modified third-party movements such as an ETA or Sellita 7750 base or a Seagull chronograph, which start, stop, and reset with a different feel. A watchmaker can confirm the caliber in minutes with the case back removed.
Case, dial, and finishing
Genuine examples have crisp, deep engraving on the case back, even lume and printing on the dial, and aligned subdial hands that snap back to zero. Fakes show soft engraving, slightly off-center subdials, printed text that bleeds at the edges, and pushers that feel gritty. The anti-reflective coating on a real IWC sapphire crystal also produces a distinct blue or purple tint under angled light.
Price, paperwork, and seller behavior
A new steel Portugieser Chronograph lists around $8,000 USD at retail, and pre-owned prices hold well above the low thousands. Any offer in the low hundreds, shipped from overseas with no box, papers, or serial history, is a counterfeit. Genuine sellers provide the warranty card, service records, and a verifiable serial number.
Is buying a replica IW371633 illegal?
Yes in the United States and most of the European Union. Trafficking in counterfeit goods carries penalties of up to 10 years in prison and a $2 million fine for a first offense under federal trademark law. U.S. Customs and Border Protection seizes counterfeit watches at ports of entry, and buyers can lose both the watch and the money.
How should a buyer approach the IW371633?
Buy from an authorized IWC dealer or a reputable pre-owned specialist with a return policy and authentication guarantee. Ask for movement photos, a serial number check, and a recent service invoice. If the deal depends on speed, secrecy, or an overseas wire transfer, walk away.
FAQ
Do replica IW371633 watches use real IWC parts?
No. Counterfeit watches use third-party movements, aftermarket cases, and generic sapphire, and IWC does not supply parts to unauthorized repairers.
Can an IWC boutique service a replica?
No. IWC service centers refuse counterfeit watches and will not return them with a repair estimate.
Is a replica IW371633 a good investment?
No. Counterfeits have no resale market through legitimate channels and lose nearly all value the moment they are purchased.