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This is a generic sapphire crystal designed for the Breguet Classique 5177 (and compatible with 5178, 7037), measuring 34.5mm in diameter, 2.4mm in height, and 1.0mm in thickness.
Featuring a domed round profile with blue reflective coating, this aftermarket replacement crystal comes complete with a matching gasket for secure, water-resistant installation.
The original Classique 5177 features a 38mm case in 18k gold, powered by the automatic Caliber 777Q with a 55-hour power reserve and 30m water resistance .
Sapphire Crystal – Mohs 9, highly scratch-resistant and optically clear.
Domed Round + Blue Coating – Classic curved profile, reduces glare, improves dial clarity.
Includes Waterproof Gasket – Matching gasket included for secure sealing after installation.
Precise Dimensions – 34.5mm diameter, 2.4mm height, 1.0mm thickness – exact fit for the 38mm case.
Generic Aftermarket – Non-original but manufactured to OEM specs for direct replacement.
| Parameter | Details |
|---|---|
| Compatible Models | Breguet Classique 5177, 5178, 7037 (38mm 18K gold case) |
| Type | Generic aftermarket |
| Material | Synthetic sapphire |
| Shape | Domed round |
| Diameter | 34.5 mm |
| Height | 2.4 mm |
| Thickness | 1.0 mm |
| Coating | Blue anti-reflective |
| Included | Waterproof gasket |
Breguet Classique 5177, 5178, 7037 (automatic Caliber 777Q)
Other Breguet Classique references using the same 34.5mm domed crystal (verify original size)
Replacement of damaged, deeply scratched, or aged original crystals
1. Is this a genuine Breguet crystal?
No. It is a generic aftermarket replacement, not original, but matches the 5177 dimensions and includes a gasket.
2. Will the original 30m water resistance be maintained after installation?
Proper installation with the included new gasket can restore everyday splash resistance (30m). A water resistance test is advised.
3. What should I pay attention to during installation?
Clean the case groove, place the new gasket, then the crystal. Press evenly with a crystal press with the dome facing outward. Professional installation is recommended.
4. Will the blue coating peel off?
It will not peel under normal use. Avoid abrasion with hard objects or harsh cleaning. Fine scratches may appear over time.
5. Does this crystal fit other Breguet models like 5178 or 7037?
Yes, the listing states compatibility with 5178 and 7037 – they share the same crystal dimensions.
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