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  • Sapphire Crystal Customization For Seiko Sumo
  • Sapphire Crystal Customization For Seiko Sumo
  • Sapphire Crystal Customization For Seiko Sumo
Seiko Accessories

Sapphire Crystal Customization For Seiko Sumo

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Sapphire Crystal Customization For Seiko Sumo

Tired of the Hardlex mineral crystal on your Seiko Sumo?

Now you can purchase a soft domed sapphire with AR coating underneath with us.

So what happens when you purchase this option with your new Seiko Sumo?

1. We switch out the sapphire crystal with our compatible Sumo soft domed sapphire crystal with anti-reflective coating on the inside.

2. A waterproof test will be done thereafter to ensure that it maintains the factory water resistance ratings.

3. For an added peace of mind, we will include the waterproof certification as well.

Disclaimer:

If the Sumo is purchased from Gnomon Watches, the watch will still have the full 1 year Gnomon's warranty from the date of purchase.

For all these to be done, we will need additional 2 working days for our watchmaker to complete.

The soft domed sapphire crystal is applicable only to the following models:

Prospex 200M Automatic Black Sumo Ref. SBDC031

Prospex 200M Automatic Blue Sumo Ref. SBDC033

Prospex 200M Automatic Blue Coral Sumo Ref. SBDC069

Prospex 200M Automatic Hulk Green Sumo Ref. SZSC004

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Maker

Movement

Case

Lug width

Water resistance

Dimensions

Maker
Movement
Case
Lug Width
Water resistance
Dimensions