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© 2026 The Mod Connect
Independent Workshop

Custom Seiko Mods. Built, Not Bought.

Hand-assembled builds running genuine Seiko automatic movements. 55 in stock, each one finished and regulated in-house.

Shop all 55 builds
The Mod Connect
55
Builds in stock
Seiko
Automatic movements
In-house
Assembled & regulated
1 of 1
Most builds are one-off
The Collection

Every Build In Stock

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Seiko Regatta
Seiko
Regatta
$479.99
Seiko Regatta
Seiko
Regatta
$479.99
Seiko Dive 300
Seiko
Dive 300
$479.99
Seiko Dive 300
Seiko
Dive 300
$479.99
Seiko Executive Classic
Seiko
Executive Classic
$479.99
Seiko Essential Time-Only
Seiko
Essential Time-Only
$479.99
What A Mod Actually Is

A Real Movement, Built Your Way

A mod isn't a copy — it's a watch assembled from parts, around a caliber that actually earns its keep. Every piece here is built on a genuine Seiko automatic: a movement that has been in continuous production for decades because it is cheap to service, hard to kill, and honest about what it is.

Cases, dials, hands, bezel inserts and crystals are sourced from independent parts makers, then fitted, timed and regulated by hand on our bench. Nothing is glued together and shipped blind. Each build gets its rotor tested, its hands aligned, its bezel action checked, and its gaskets seated before it goes in the box.

The result is a watch that is genuinely yours — assembled to a spec that no factory would ever bother producing.

Custom Commissions

Want Something That Isn't On The Shelf?

Bring us a dial, a bezel insert, a hand set, or just a rough idea. Custom commissions are what we do best — tell us what you're after and we'll quote the build.

Start a custom build

New Drops, First Look

Builds move fast and most are one of one. Join the list and see new pieces before they hit the shop page.

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Independence & Non-Affiliation

Independence & Non-Affiliation

The Mod Connect is an independent workshop. We are not affiliated with, authorized by, endorsed by, or connected to Rolex, Omega, Tudor, Seiko Corporation, or any other watch manufacturer. All trademarks and brand names are the property of their respective owners. Our watches are custom-assembled pieces built from third-party and aftermarket components around genuine Seiko automatic movements, and are sold as such.