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Santeiko | Classic Fck 9-5 -
Santeiko | Classic -
Santeiko | Tiffany Blue -
Santeiko | Classic Textured -
Santeiko | Two Tone Gold -
Santeiko | Emerald Green -
Santeiko | Gold White -
Santeiko | Dark Grey -
Santeiko | Blue Leather & White -
Santeiko | White Skeleton -
Santeiko | Black Skeleton -
Santeiko | Black -
Santeiko | Full Black -
Santeiko | Silver Skeleton -
Santeiko | Brown Leather & White -
Santeiko | Black Fck 9-5 -
Santeiko | Classic Brown -
Santeiko | Two Tone Brown Leather -
Santeiko | Two Tone Rose Gold
Seiko Santos — The Square Case That Started It
The Seiko Santos mod exists because the square-cased, exposed-screw look never really went away — it just took a break. Santeiko brings that design back around a Seiko NH35 automatic movement: square case, visible bezel screws, integrated Santos-style bracelet, unmistakable at ten feet.
Standard, Skeleton, or Leather
Most of the Santeiko line runs a standard closed dial on the signature bracelet, but there's real range here — skeleton dials that show the movement working, two-tone gold and silver combinations, and leather-strap variants for the days you want the case shape without the full metal-bracelet look. The leather options in particular change the whole feel of the watch — same square case, dressier finish.
The Movement
Seiko NH35 automatic, hand-fitted during assembly like every other collection here. It's not the flashiest spec on paper, but it's the same movement watch enthusiasts trust across the mod community for a reason: it's reliable, it's serviceable, and it keeps good time without needing a jeweller every six months.
Why the Square Case Stands Out
Every other collection on this site is built around a round case, which makes the Santos genuinely different rather than just another colourway option. Exposed screws on the bezel were originally a functional detail, not decoration — and keeping them visible here is what makes the square-case design read as authentic instead of generic.
The Details
38mm case, sapphire crystal, 316L stainless steel, Santos-style bracelet (or leather strap depending on variant), 3ATM water resistance. Hand-assembled in Sweden, every screw checked and every link fitted before the watch ships — the details that make or break a design this exposed. This is a Seiko Santos mod collection for anyone who wants a case shape genuinely different from the round watches taking up the rest of their collection.
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FREQUENTLY ASKED QUESTIONS
What is a Seiko Mod?
A Seiko Mod is a custom-built watch, hand-assembled with a reliable automatic or hybrid Seiko movement. It's paired with premium aftermarket parts to create a watch that's uniquely yours!
Do they come with any kind of warranty?
Yes. All watches ship with a 1-year warranty covering movement-related issues.
I like a watch, but want a different strap/dial.
No problem. Message us before you order - we can customize it for you.
How long does assembly take?
Assembly takes about 7-12 business days. That's because every watch is built entirely to order. We source the parts you've chosen, hand-assemble everything with care, and run a full quality check before it ships. That way you get a custom watch built to last.
Do you ship internationally?
Yes, we ship worldwide. Standard shipping rates apply and are calculated at checkout.
MORE QUESTIONS?
Contact us