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SNXS Sapphire Crystals for Seiko Mod Builds
Replace the original Hardlex crystal on your Seiko 5 SNXS with sapphire. Every crystal here is made for the SNXS's 37mm case, is 30.9mm across with a blue anti-reflective coating, and fits the SNXS73, SNXS75, SNXS77, SNXS79 and SNXS80.
Why Sapphire Over Hardlex
Hardlex is Seiko's own mineral glass, treated with heat and chemicals. Sapphire is far harder, second only to diamond, so it resists the fine scratches daily wear leaves on a Hardlex crystal.
Double Dome or Flat
- Double dome: 3.3mm tall.
- Flat: 1.8mm tall, keeping the watch's original design.
Crystals for Other Watches
For other builds, see the SKX007, SKX013, SRP Turtle, SRPE and SNZF17 sapphire crystals, or the full sapphire crystal collection.
Frequently Asked Questions
Which Seiko models do these crystals fit?
Every crystal here is made for the Seiko 5 SNXS 37mm case and fits the SNXS73, SNXS75, SNXS77, SNXS79 and SNXS80.
Will these crystals fit my SNZF17 Sea Urchin?
Every crystal here is made for the SNXS, and none lists the SNZF17 Sea Urchin, which has sapphire crystals of its own, sized for that watch.
Double dome or flat: what's the difference?
The double dome is 3.3mm tall, and the flat crystal is 1.8mm tall, keeping the watch's original design. Each is 30.9mm across with a blue anti-reflective coating.
Are these real sapphire crystals?
Yes. Each is a sapphire crystal with a blue anti-reflective coating, made to replace the SNXS's original Hardlex crystal. Sapphire is far harder than Hardlex, Seiko's own treated mineral glass, so it resists everyday scratches.
Browse the SNXS sapphire crystals above to find the one for your build.