GMT Mods

Our gmt seiko mods are dual-time travel watches built around a genuine Seiko NH34 automatic with a true independent GMT hand, wearing a real second-time-zone complication and two-tone 24-hour bezel. Every one carries a sapphire crystal and a 2-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.

Skip to results list

Active filters:

8 items
Column grid
Column grid

Filter

Active filters:

  • GMT (Bruce Wayne) | NH34 Custom Mod Watch

    Seiko Bruce Wayne GMT Mod

    Sale price  $459.00 Regular price $689.00
  • GMT (Rootbeer) | NH34 Custom Mod Watch

    Seiko Rootbeer GMT Mod

    Sale price  $459.00 Regular price $689.00
  • GMT (Batman) | NH34 Custom Mod Watch

    Seiko Batman GMT Mod, Blue/Black Bezel

    Sale price  $459.00 Regular price $689.00
  • GMT (Pepsi) | NH34 Custom Mod Watch

    Seiko Pepsi GMT Mod

    Sale price  $459.00 Regular price $689.00
  • GMT (Sprite) | NH34 Custom Mod Watch

    Seiko Sprite GMT Mod

    Sale price  $459.00 Regular price $689.00
  • GMT (Gold) | NH34 Custom Mod Watch

    Seiko GMT Mod – Gold

    Sale price  $459.00 Regular price $689.00
  • GMT (Rose Gold Rootbeer) | NH34 Custom Mod Watch

    Seiko Rootbeer GMT Mod – Rose Gold

    Sale price  $459.00 Regular price $689.00
  • GMT (Coke) | NH34 Custom Mod Watch

    Seiko Coke GMT Mod

    Sale price  $459.00 Regular price $689.00

Our gmt seiko mods are dual-time travel watches built around a genuine Seiko NH34 automatic with a true independent GMT hand, wearing a real second-time-zone complication and two-tone 24-hour bezel. Every one carries a sapphire crystal and a 2-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.

For people who track two time zones. The Seiko GMT mod collection pairs a genuine dual-time GMT movement with the bezel colourways collectors know: Batman, Bruce Wayne, Root Beer and Sprite.

New to the nicknames? Read the Bruce Wayne Seiko mod guide, or see how a mod stacks up in Seiko 5 GMT vs a GMT mod.

Japanese automatic movement, sapphire crystal, built to order with free worldwide shipping. The travel-watch look and function for a fraction of the original. Independent and independent. Not a copy. A choice.

Frequently asked questions

Is a GMT mod a real automatic?

Yes. Each one runs a genuine Seiko NH34 automatic with a true independent GMT hand. It is fully mechanical and self-winding, powered by the motion of your wrist.

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. Every watch is an original Rosevari build: a genuine Japanese automatic movement in a case and dial style that pays homage to the classics. Every watch is sold openly as a Rosevari custom build, never as the genuine article, and we disclose every part we use.

How much does it cost and how long does it take?

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