Rose gold watch on a wrist with a blurred background

Prebuilt Seiko Mods

Professionally assembled.

Welcome to Nomods, your home for Seiko modding.

We create and curate everything from prebuilt Seiko mods — ready-to-wear custom watches inspired by luxury designs — to a full catalog of Seiko mod parts for DIY builders. Whether you’re searching for a Royal Oak, Nautilus, Aquanaut, or Petrichor mod, or planning your own build with dials, cases, crystals, and hands, we’ve got you covered. Based in Norway and shipping worldwide, NOMODS delivers both craftsmanship and choice for every watch enthusiast.

Ultra thin

We set out to develop the thinnest Seiko Modding Case in the world at 9.95mm and certainly the thinnest Nautilus case for Seiko Modding!

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Curved caseback

With the curved caseback the middle part of the case sits a lot lower on the wrist utlimately making the design feel even slimmer.

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Slim profile

These two elements allow for a super slim profile and premium feeling to the watch. This is a breakthrough in case design, challenging Seiko movements' main limits!

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craftsmanship & trust

Built by Modders, for Modders

Global reach & localization


Worldwide Shipping from Norway

Technical quality & reliability

NH Movement Expertise & High-Quality Fit