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Generic sapphire crystal for Tudor Hydronaut 89190, also fits 89193 cases. Flat round design with date window compatibility. High‑quality synthetic sapphire (Mohs 9), scratch resistant. Aftermarket replacement for damaged original crystals.
Flat round shape – classic diver style, matches original profile
Date window compatible – clear view of calendar display
Synthetic sapphire – excellent scratch resistance (Mohs 9)
High optical clarity – maintains dial visibility
Affordable alternative to OEM crystal
| Parameter | Value |
|---|---|
| Compatible models | Tudor Hydronaut 89190, 89193 |
| Crystal diameter | 29.1 mm |
| Shape | Flat round |
| Material | Synthetic sapphire |
| Hardness | Mohs 9 |
| Type | Aftermarket |
Replace scratched, cracked, or damaged original crystals on Tudor Hydronaut 89190 and 89193.
Professional watch repair and restoration.
Q1: Genuine Tudor part?
No, generic aftermarket.
Q2: Does it fit 89193?
Yes, same crystal size.
Q3: Does it have a date magnifier?
No, flat round design. Uses the watch‘s built‑in date window.
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.









