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This is a mineral glass watch crystal featuring a double domed (Double Domed) design, with a thickness of 2.0mm and available diameters ranging from 28.0mm to 40.0mm. Mineral glass offers good scratch resistance, while the double domed profile reduces glare and improves readability, making it an economical and practical choice for replacing damaged or aged watch crystals.
Mineral Glass – Harder than standard glass, offers good scratch resistance at an affordable price.
Double Domed Profile – Both inner and outer surfaces are curved to reduce glare, improve dial visibility, and add a vintage aesthetic.
Multiple Diameters – Available from 28.0mm to 40.0mm (common sizes: 28, 30, 32, 34, 35, 36, 38, 40mm) to fit a variety of watch cases.
Uniform 2.0mm Thickness – Suitable for standard case bezel groove depths, easy to install.
Generic Aftermarket – Non‑branded but dimensionally accurate; ideal for repairs, modifications, or custom watch builds.
| Parameter | Details |
|---|---|
| Material | Mineral glass |
| Shape | Double domed (double curved) |
| Thickness | 2.0 mm |
| Diameter Range | 28.0 mm – 40.0 mm |
| Application | Watch repair, crystal replacement, DIY watchmaking |
1. How do I choose the correct diameter for my watch?
Measure the diameter of your original crystal (with a caliper) or the inner groove of the case bezel. Select the closest size (within 0.5mm). For example, if the original is 32mm, choose 32mm.
2. What is the difference between mineral glass and sapphire crystal?
Mineral glass is more affordable with a hardness of about 5-6 (Mohs), prone to scratches from sand. Sapphire is much harder (9) and nearly scratch-proof but costs more. This product is mineral glass, suitable for budget‑conscious users or less demanding conditions.
3. Does double domed glass magnify the dial?
Double domed glass can cause slight optical magnification at the edges but not a central magnifier like a Cyclops. It adds a nice three‑dimensional effect to the dial without affecting readability.
4. Do I need glue for installation?
Yes, typically a dedicated crystal adhesive or UV glue is applied to the groove, then the crystal is pressed in with a crystal press. Some cases use a gasket for a friction fit. Professional installation is recommended.
5. How water resistant is it after installation?
The crystal itself does not provide water resistance; the final seal depends on the gasket, installation, and case construction. With a new, proper gasket and correct installation, it can achieve everyday splash resistance (washing hands, rain). Not suitable for swimming or diving.
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Competitive pricing on Seiko/Hattori calibers.
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