Seamaster Mods

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  • Seamaster (Midnight Black) Seiko NH35 automatic mod watch. A black dial watch with a rotating dive bezel and a mesh bracelet, shown in a full product shot.
    Sale

    Seamaster (Midnight Black) | NH35 Custom Mod Watch

    Seiko Seamaster Mod – Midnight Black
    $359.00 $539.00
  • Seamaster (White) Seiko NH35 automatic mod watch. A white dial watch with a rotating dive bezel and a mesh bracelet, shown in a full product shot.
    Sale

    Seamaster (White) | NH35 Custom Mod Watch

    Seiko Seamaster Mod – White
    $359.00 $539.00
  • Seamaster (Black) Seiko NH35 automatic mod watch. A black dial watch with a rotating dive bezel and a mesh bracelet, shown in a full product shot.
    Sale

    Seamaster (Black) | NH35 Custom Mod Watch

    Seiko Seamaster Mod – Black
    $359.00 $539.00
  • Seamaster (Blue) Seiko NH35 automatic mod watch. A blue dial watch with a rotating dive bezel and a steel bracelet, shown in a full product shot.
    Sale

    Seamaster (Blue) | NH35 Custom Mod Watch

    Seiko Seamaster Mod – Blue
    $359.00 $539.00
  • Seamaster (Black Silicone) Seiko NH35 automatic mod watch. A black dial watch with a rotating dive bezel and a rubber strap, shown in a full product shot.
    Sale

    Seamaster (Black Silicone) | NH35 Custom Mod Watch

    Seiko Seamaster Mod – Black Silicone
    $359.00 $539.00

Our Seamaster-style Seiko mods take the wave-pattern dial and the scalloped dive bezel and build them on a genuine Seiko NH35 automatic. Every one carries a sapphire crystal, 316L marine-grade stainless steel and a 1 year warranty, and is splash-resistant as standard, with a Swim-Ready upgrade you can add at order time. Made to order, with free worldwide shipping. Made to be looked at twice.

The dive watch that learned to dress up. The Seiko Seamaster mod keeps the wave-textured dial, the applied indices and the sword hands, on a movement you can service anywhere.

Five builds: Black, Midnight Black, Blue, White, and one on a black silicone strap if you want the lighter wear.

Guides for this collection

Frequently asked questions

Is a Seamaster mod a real automatic?

Yes. Each one runs a genuine Seiko NH35 automatic: 21,600 beats per hour, hacking seconds, hand-winding and around a 41 hour power reserve.

What is the wave dial made of?

The wave pattern is stamped into the dial itself, so it catches light as you turn your wrist rather than being printed flat.

Can I swim or dive with it?

Not as standard. Standard builds are splash-resistant: fine for rain, hand-washing and everyday wear, but not for swimming, showering or diving. To swim with it, add the Swim-Ready 5 ATM upgrade when you order, and screw the crown down before any water.

Is this an original watch?

Yes. It is an original Rosevari build: a genuine Japanese automatic movement in a case and dial style that pays homage to a classic. It is sold openly as a Rosevari custom build, never as the genuine article, and every part is named.

What does it cost and how long does it take?

Prices show in your currency on each watch. Every build is made to order, in 2 to 4 weeks from order to dispatch, with free worldwide shipping and a 1-year warranty.