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Description
ZF Factory IWC Portugieser Chronograph Rose Gold Ref. IW371480
The definitive 1:1 super clone achieving the exact 11.6mm genuine thickness through a custom-modified slim chronograph movement.
Powered by Custom Slim Asian 7750 (Caliber 79350 Clone)
Powered by a premium 1:1 clone automatic chronograph movement. This highly sought-after caliber has been heavily modified by ZF to remove standard bulky modules, allowing the case to sit at the exact 11.6mm thickness as the genuine Valjoux-based IWC caliber. It features full chronograph functionality with the running seconds at the 6 o’clock subdial.
Accuracy: ±15 seconds per day (when fully wound). Warranty Policy: A deviation of ±15 seconds per day is considered normal for mechanical movements. If your watch runs significantly outside this range within one year, our warranty will cover adjustment.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Functionality: Fully operational chronograph (stopwatch) with center seconds, 30-minute counter at 12 o’clock, and running small seconds at 6 o’clock.
- ✅ Reliability: Tested meticulously on the timegrapher for consistent amplitude and reliable push-piece engagement.
Technical Specifications
Rose Gold Plated 316L Steel Case
Crafted from marine-grade stainless steel with a high-quality 18K Rose Gold PVD plating. Perfectly balances on the wrist at 88.4g, matching the classic dress watch weight.
Silver-Plated Dial
Exquisite sunburst finish adorned with applied solid rose gold-toned Breguet numerals and the signature elegant leaf hands. The subdial spacing is flawlessly replicated.
Brown Leather Deployant
Fitted with a supple brown calfskin leather strap secured by a beautifully finished IWC-stamped rose gold deployant clasp for maximum security and comfort.
AR-Coated Sapphire
Features a scratch-resistant sapphire crystal treated with a double-sided anti-reflective (AR) coating, delivering a highly transparent, “glassless” aesthetic under bright lighting.
🏆 Why We Chose ZF for this Model?
Many clients ask: “Why not YLF or AZF?”
Here is the honest truth: While competitors offer decent versions, ZF wins entirely in terms of case thickness and dial precision. Historically, Valjoux 7750 clone movements forced replicas to be overly thick (13mm+). ZF was the first to extensively modify the movement plates, effectively shrinking the watch down to the exact 11.6mm thickness of the genuine. For the Portugieser, this slender profile on the wrist is paramount.
Full Disclosure: Due to the high rotation speed of the 7750-based winding mass, the automatic rotor can be slightly louder than Gen in a completely silent room. This is a widely known and accepted standard for this specific clone movement architecture.
Data Sheet
| MODEL REFERENCE | IW371480 |
| FACTORY / VERSION | ZF (Z Factory) |
| MOVEMENT | Modified Slim Asian 7750 (79350 Clone) |
| CASE MATERIAL | 18K Rose Gold Plated 316L Stainless Steel |
| WEIGHT & THICKNESS | 88.4g | 11.6mm |
| CRYSTAL & LUME | Scratch-Resistant Sapphire with AR | N/A (As per Genuine) |
| DIMENSIONS | 41mm Diameter (Manual measurements may have slight discrepancies.) |
Common Questions about the Portugieser Chronograph
Q: Is this ZF version waterproof?
A: Out of the box, it is sealed for basic daily use (splash/rain proof). Due to the chronograph pushers, we strongly recommend a professional pressure test before submerging or swimming.
Q: How does the movement compare to the Genuine?
A: It features a highly reliable power reserve of Approximately 36 hours. The key achievement is its physical layout—the running seconds are correctly positioned at 6 o’clock and the overall thickness matches Gen, making it an engineering marvel in the replica world.
Q: What is the biggest difference compared to Gen?
A: Under a macro lens, the finishing on the leaf hands or the depth of the case-back engravings may show microscopic differences. However, on the wrist, its 11.6mm thinness makes it virtually indistinguishable to the naked eye.
🛡️ Our “No-Lemon” Guarantee
- Strict QC Process: Every watch undergoes rigorous Timegrapher accuracy testing, waterproof testing, and visual flaw inspection before shipping. You will receive high-res QC photos and videos of your specific watch to approve.
- Customs Safe: We use triangular shipping methods. 100% Customs Clearance Guarantee: If seized by customs, we will reship a new one for free.
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