Prebuilt Seiko Mods

Professionally assembled.

Build It Yourself

Dials, Cases, straps and more - Curated for NH35/NH36 & NH7x

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.

FEATURED PREBUILT MODS

Discover our most popular prebuilt Seiko mods, each powered by reliable NH movements and fitted with sapphire crystals. Professionally assembled and ready to wear.

CUSTOM SEIKO WATCHES

Explore custom Seiko mods inspired by iconic designs — from Royal Oak and Nautilus to Aquanaut and Petrichor. Each style has its own bold personality.

SEIKO MOD PARTS

Build your own Seiko mod with our curated selection of dials, cases, crystals, hands, crowns, and straps. Perfect for NH35/NH36 and NH7x builders.

Frequently Asked Questions

What is a Seiko mod?+
A Seiko mod is a custom watch built using a Seiko or NH movement combined with aftermarket parts such as cases, dials, hands, and crystals. Mods can be bought prebuilt or created by DIY modders.
Do you sell both prebuilt Seiko mods and parts?+
Yes. NOMODS offers ready-to-wear Seiko mods and a full catalog of Seiko mod parts for DIY builders. You can choose to buy a finished watch or build your own.
Are your Seiko mods genuine Seiko watches?+
All NOMODS watches use genuine Seiko/NH movements (e.g., NH35/NH36, NH70/71/72). The cases, dials, crystals, and straps are high-quality aftermarket components assembled by experts.
Do you ship worldwide?+
Yes. We ship worldwide from Norway with secure, tracked delivery options. Shipping times vary by region, and all orders are carefully packed for safe arrival.
Are Seiko mods water resistant?+
Many builds are designed for water resistance, but it is only guaranteed if the watch has been pressure-tested and rated. Always check the specifications on each product page.
Can I return or exchange my order?+
Yes. We accept returns and exchanges on unused items within the stated return period. Please see our Refund Policy for details.

craftsmanship & trust

Built by Modders, for Modders

Global reach & localization


Worldwide Shipping from Norway

technical quality & reliability

NH Movement Expertise & High-Quality Fit

Guides & Inspiration

New to Seiko modding? Browse our tutorials and inspiration guides to learn about case sizes, dial choices, movement families, and build ideas.

Based on 54 reviews
91%
(49)
4%
(2)
2%
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4%
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Didn’tarrived

Didn’t arrived

Bought the case

Bought the case. It is really a unique product that doesn't exist anywhere else in the market. For anyone who likes Royal Oak and like a smaller footprint, this is an unmissable offering. Thank you Nomods.

Perfect Seikoak mod

Everything was perfect. Shipping was fast and the product is of very good quality. In my opinion this is a the best Royal Oak mod you'll find on internet

The strap let it down unfortunately

The strap let it down unfortunately disappointing

love the watch

Absolutely love the watch, it look realy good and adjusting the band was really easy

Very Reliable

Awesome watch! Excellent piece from these guys. This is the 3rd piece and I have never been let down:

Scam

Scam

Hello,

I’m sorry to see this review. Just to be clear, your order was shipped on time (28th of July) with Posten.no (Norway’s national postal service) and handed over to USPS in the US, where tracking shows it was delivered. When you told me it hadn’t arrived, I started contacting both postal services and got back to you as soon as I had any news. This took about five days, which I agree is longer than ideal, but their reply was slow due to low staffing.

The fastest way to solve this is for you to contact USPS, which I asked you to do three times. You declined and then stopped replying. Two days later, this “scam” review appeared.

Of course, you’ll get a refund if the package truely never shows up, but right now we’re still trying to locate it, and it’s far too early to start calling me a scammer or sending harassing and threatening messages.

This is a passion project, and I put a lot of effort into treating people fairly and being transparent. I’m still happy to help with USPS or open a claim if you’d like to get this resolved. You are always welcome to contact me, or reply to my previous message.

--- Mathias from Nomods

Amazing build

Amazing build qualit

Wonderful watch

Really well made, very happy with the product.

Very highly quality RO homage case

Very highly quality RO homage case. 37mm is a perfect fit for smaller wrists.

Perfect Case, Amazing Brand

This is the perfect size for this style of case. The quality of the cases is top-notch, they feel and look excellent. Additionally, Mathias from Nomods is also very friendly and professional and helped me out with all my questions and customization requests.

Perfect case

Perfect size, perfect size case with the bezel being the right size. It is not too thick or too narrow, it is just right

Very nice

Very nice case and very good quality
Nice seller

H
Seiko NH35 TMI
Hidehiro Ushijima
great

great

Impeccable!!

Impeccable!!

Unique and gorgeous watch case

I am creating a custom watch build for my brother who works at a gym. I wanted something equal parts sport and elegance and the Petrichor meets and exceeds my standards for both. Really solid build quality with exceptional finishing, and a comfortable micro-adjustable bracelet to boot. I will be buying from NoMods again.

Gold Royal Oak Dial

Fantastic quality. Looks exactly like the image. Looks great.

Exactly what I was looking for

After years of research I finally found the 37mm case which is perfect in size. Excellent quality!

Perfect size, perfect platform.

I’ve always loved the look of the Royal Oak, really any Genta case design. I’ve been a fan of his work for as long as I can remember. When I came across the Nomods website I was blown away. Not only did they sell one of my favorite case designs of all time, they sell it in a wide variety of color options and what I consider the perfect size. There are other Royal Oak cases out there but this is the only one in 37mm that takes a 28.5mm dial with zero modifications. I’m very excited to see what Nomods has planned for the future with new releases. They are doing things no other mod store is doing.

Solid case

The case is solid. Good finishing, good color good execution. I’m just a lil mad the screw driver for the case screws wasn’t included. I ended up absolutely mangling some of the screws for the bracelet and I have no idea how I’m going to replace them. If you like the octagonal style of watch and want a smaller size, this is the case for you. However with that being said, if you’re going to pay the premium for this case, you have to buy the separate screw driver for the case. Take that for what it’s worth.

Great Dial!

Mathias from Nomods is excellent, and very responsive. I had a few questions about the product and he got back to me right away and was very helpful. I ended up buying the 37mm AP case and skeleton dial and they are beautiful and well made. I appreciate the quality and customer service!!