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Generic sapphire crystal for IWC Portuguese Grande Complication IW377402. Diameter 40.5mm, synthetic sapphire (Mohs 9), scratch resistant. Preserves clarity of perpetual calendar, chronograph and minute repeater displays. Aftermarket replacement for damaged original crystals.
High‑grade synthetic sapphire – scratch resistant (Mohs 9).
High optical clarity – maintains complex dial readability.
Preserves original aesthetics – matches IWC design.
Drop‑in replacement – no case modification.
| Parameter | Value |
|---|---|
| Compatible model | IWC Portuguese Grande Complication IW377402 |
| Diameter | 40.5 mm |
| Material | Synthetic sapphire |
| Hardness | Mohs 9 |
| Type | Aftermarket |
Replace scratched/cracked original crystal on IW377402.
Professional watch repair and restoration.
Q1: Genuine IWC part? No, generic aftermarket.
Q2: Does it include a gasket? No, use original or purchase separately.
Q3: Quality reliable? Yes, from reputable suppliers.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.









