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Description
ZF IWC Portugieser Automatic Blue Dial IW358402
ZF continues to assert its dominance in the IWC sector by delivering superior sunburst dial texturing and precise case dimensions.
Powered by Custom Automatic Clone Caliber
The mechanical core of this replica is a heavily modified Asian automatic movement, specifically selected for its reliability and adaptability. The factory has invested considerable effort into the decorative plates and customized rotor, ensuring the view through the sapphire caseback reflects the layout of the genuine IWC caliber. While it lacks the proprietary Pellaton winding system of the OEM, the standard reverser wheel mechanism provides consistent and dependable daily winding.
Standard factory regulation yields an accuracy of ±8–12 seconds per day. The beat rate is highly stable, making it an excellent candidate for further regulation by a qualified watchsmith.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Running seconds and time-only display
- ✅ Winding Direction: Unidirectional
Technical Specifications
The case measures an exact, verified 13.2mm in thickness, balancing polished upper surfaces with finely brushed case sides. The entire watch head and strap weigh 91.4g.
Featuring a refined sunburst effect, the dial accurately captures ambient light. The rhodium-plated leaf hands and applied Arabic numerals exhibit excellent proportional accuracy.
A minimalist, ultra-thin polished bezel maximizes the visual real estate of the dial, a hallmark of the classic Portugieser design language.
Fitted with an alligator-embossed leather strap and a well-machined 316L deployant clasp that mirrors the genuine IWC locking mechanism tolerances.
Why ZF for This Reference?
Many collectors ask: “Why not YLF or AZF?”
While YLF produces a competitive Portugieser, ZF consistently leads in dial execution. The sunburst finish on this specific blue dial avoids the overly metallic, purple-leaning hue often seen in lesser replicas. Furthermore, ZF’s application of the Arabic numerals demonstrates tighter tolerances, with virtually no visible glue residue under a loupe.
Full Disclosure: The factory-supplied leather strap is noticeably stiff out of the box. Most serious horologists immediately swap it for a genuine or high-grade aftermarket strap to match the premium feel of the watch head. Additionally, the rotor can be slightly audible in quiet environments.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | IW358402 |
| FACTORY / VERSION | ZF Edition |
| MOVEMENT | Custom Asian Automatic Clone |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | 91.4g | 13.2mm |
| CRYSTAL & LUME | Domed Sapphire with AR | Standard Super-LumiNova |
| DIMENSIONS | 40mm × 48mm × 13.2mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 30m stated rating — professional pressure test recommended before swimming |
Collector Q&A
Q: How does the sunburst blue dial compare to the genuine IW358402?
A: ZF has achieved an excellent color match, capturing the dynamic shift from deep navy to bright blue under direct light, though the genuine lacquer possesses a marginally deeper liquid gloss.
Q: Will the deployant clasp fit genuine IWC leather straps?
A: Yes, the ZF deployant clasp is manufactured to 1:1 OEM specifications and will seamlessly accommodate genuine IWC straps or high-end aftermarket alternatives.
Q: Why does the power reserve differ from the genuine specification?
A: While the genuine caliber boasts a multi-day power reserve via the Pellaton winding system, this clone movement operates on a standard mainspring barrel, delivering approximately 36 hours of reliable autonomy.
Q: Is the movement noisy during daily wear?
A: Like many Asian automatic clones with heavy decorated rotors, there is a slight audible whir during vigorous wrist movement. A minor movement service and rotor silencing by a watchsmith can mitigate this.