Skeleton & Open Heart Mods

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  • Nautilus (Open Heart, Chocolate) | NH38 Custom Mod Watch

    Seiko Nautilus Mod – Open Heart Chocolate

    Sale price  $349.00 Regular price $524.00
  • Nautilus (Open Heart, Royal Blue) | NH38 Custom Mod Watch

    Seiko Nautilus Mod – Open Heart Royal Blue

    Sale price  $349.00 Regular price $524.00
  • Royal Oak (Skeleton) | NH70 Custom Mod Watch

    Seiko Royal Oak Mod – Skeleton

    Sale price  $349.00 Regular price $524.00
  • Nautilus (Open Heart Tiffany Blue) | NH38 Custom Mod Watch

    Seiko Nautilus Mod – Open Heart Tiffany Blue

    Sale price  $349.00 Regular price $524.00
  • Royal Oak (Rose Gold Skeleton) | NH38 Custom Mod Watch

    Seiko Royal Oak Mod – Rose Gold Skeleton

    Sale price  $349.00 Regular price $524.00
  • Nautilus (White Open Heart) | NH38 Custom Mod Watch

    Seiko Nautilus Mod – White Open Heart

    Sale price  $349.00 Regular price $524.00
  • Nautilus (Black Open Heart) | NH38 Custom Mod Watch

    Seiko Nautilus Mod – Black Open Heart

    Sale price  $349.00 Regular price $524.00

Our Seiko skeleton mods and open heart builds put the movement where you can see it. Every watch here runs a genuine Seiko automatic with an exhibition dial: either a full skeleton cut that shows the whole calibre, or an open heart window over the balance wheel as it beats. Sapphire crystal, 2-year warranty, made to order with free worldwide shipping.

A Seiko skeleton watch is usually a four-figure Presage. A Seiko skeleton mod gets you the same open-dial drama on the mod community's favourite calibres, in integrated-bracelet cases the Presage line never offered. The open heart versions keep a full dial and open just one window over the escapement, so you get the mechanical theatre without giving up legibility.

Frequently asked questions

What is the difference between a skeleton and an open heart dial?

A skeleton dial removes most of the dial so you see through the whole movement. An open heart keeps the dial and cuts one window, usually over the balance wheel. Both show a genuine mechanical movement working.

Are these real automatic movements?

Yes. Every watch in this collection runs a genuine Seiko automatic. No batteries, wound by the motion of your wrist.

How much does a Seiko skeleton mod cost?

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.