Thin mod parts with classic proportions

For actual watch enthusiasts
Seiko compatible parts
6 Months warranty on parts
Free shipping over $100

Latest from Our Blog

Patek Nautilus Alternatives: Affordable Options From a $99 Homage to a Seiko Mod (2026)
The Patek Philippe Nautilus is the watch that launched a thousand waitlists. Gérald Genta sketched its porthole-shaped case in 1976, and the horizontally embossed dial,...
Royal Oak Alternatives: From $99 Homages to a Wearable Seiko Mod (2026)
The Audemars Piguet Royal Oak is one of the most recognizable watch designs ever made — the octagonal bezel with exposed screws, the "Grande Tapisserie"...
MoonSwatch mod vs Seiko mod : ce que vous pouvez personnaliser
Swatch vient de dévoiler une collaboration avec Audemars Piguet — la « Royal Pop » en biocéramique, une relecture en forme de montre de poche...
Seiko Black Bay Mod : Le guide Tudor plongeuse vintage
La Tudor Black Bay, c'est à quoi ressemble Rolex quand elle arrête d'essayer d'être chère. La ligne Heritage reprend les plongeuses militaires Tudor des années...
Seiko Tank Mod : L'alternative rectangulaire Cartier
Un Seiko Tank mod, c'est une montre à mouvement Seiko habillée d'un boîtier rectangulaire dans le style Cartier Tank, cadran et aiguilles évoquant la montre...
Seiko Aquanaut Mod : Le guide de l'alternative sport Patek
Une Patek Philippe Aquanaut au poignet coûte entre 20 000 et 35 000 $. Un Seiko mod façon Aquanaut — le même boîtier coussin arrondi, le même...
Seiko Santos Mod : Le guide de l'alternative à la Cartier (2026)
Dans cet article Qu'est-ce qu'un Seiko Santos Mod ? L'ADN design de la Cartier Santos Seiko Santos Mod vs Cartier Santos authentique Les pièces essentielles...
Seiko Datejust Mod : Le guide complet (2026)
Table des matières Qu'est-ce qu'un Seiko Datejust Mod ? Pourquoi la Datejust est le style Rolex le plus moddé Seiko Datejust Mod vs vraie Rolex...
Acheter une Montre Seiko Mod : Guide d'Achat et Nos Meilleurs Modèles [2026]
Sommaire Pourquoi acheter une montre Seiko mod ? Comment choisir votre Seiko Mod Nos meilleurs Seiko Mods pré-assemblés Construire ou acheter ? Comparaison Livraison et...
Seiko Mod : Le Guide Complet pour Personnaliser Votre Montre Seiko [2026]
Sommaire Qu'est-ce qu'un Seiko Mod ? Les pièces essentielles pour un Seiko Mod Seiko Mod DIY vs. montres pré-assemblées Les Seiko Mods les plus populaires...
Seiko Nautilus Mods : Guide Complet des Prix et de l'Assemblage (2026)
Table des Matières Qu'est-ce qu'un Mod Seiko Nautilus ? Quel est le Coût Réel d'un Mod Nautilus ? Ce qui Caractérise un Mod Nautilus de...
Les montres Seiko Mod valent-elles leur prix ? Le guide complet 2026
Table des matières Qu'est-ce qu'une montre Seiko Mod ? Les vrais coûts détaillés Trois styles, trois propositions de valeur Ce qui distingue un bon mod...

Frequently Asked Questions

Use this section for any descriptive text you need to fill out your pages or to add introductory headings between other blocks.

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.

Yes! We offer both Seiko Modding parts and pre-built watches. We can also tailor a watch to your liking with our existing parts.

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. Our watches are not meant to imitate original Seiko watches, and we have no affiliation with them.

Yes, we ship worldwide!

Our Complete Seiko Mods are water proof guaranteed. Check the description for its specifications.

Our parts are water proof given the gaskets are installed correctly, and all parts are screwed all the way down.

A Seiko mods water resistance can vary for various reasons such as quality of assembly, specs of parts, and more.

Of course! We offer a 30-day return policy. Read more about our return policy at the bottom of the page.

Still have questions?
Contact our support team

The Seiko Mod Parts Store for Enthusiasts

Nomods is a dedicated Seiko mod parts store built by watch enthusiasts, for watch enthusiasts. Whether you are building your first Seiko mod or refining a collection of custom timepieces, we carry everything you need — from cases and dials to hands, movements, and straps.

Our Seiko mods draw inspiration from iconic watch designs. The Nautilus collection pairs clean lines with sapphire crystals and Seiko NH movements for a refined everyday watch. The Royal Oak collection captures octagonal geometry in both 37 mm and 41 mm case sizes, complete with integrated bracelets. And the Petrichor collection offers a compact, classically proportioned alternative for those who prefer understated design.

Every part we sell is designed to work with standard Seiko NH35, NH36, and NH72 movements — genuine Seiko Instruments calibres trusted by modders worldwide. We test fitment across our full range so cases, dials, and hands work together without guesswork. If you want a ready-to-wear piece, our complete Seiko mods ship fully assembled and pressure-tested.

Not sure where to start? Our build guide walks you through the entire process, and our best Seiko mods of 2026 roundup highlights the most popular builds this year. We ship worldwide from Europe with tracked shipping on every order.