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Customers rate us 4.9/5 based on 4362 reviews
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    Titanium Parts

    Seikonaut Ultra-Thin

    We are the pioneer for the development and production of highest quality SEIKO mod parts. We are always innovating and pushing the limits of dial production. Using only 100% Swiss Super-LumiNova® luminous pigments. ISO 9001 Certified.

    Designed By Modders.
    For Modders.

    Read our story

    Seikonaut

    Types

    Seikonaut — Ultra-Thin Seiko Mod Cases

    The Seikonaut is our original 38mm ultra-thin Seiko mod case, designed in-house at Lucius Atelier and released in 2025. Available in 316L stainless steel and Grade 4 titanium, each paired with a precision-matched 20/16mm bracelet. Built for modders who prioritize wearability on smaller wrists without sacrificing the sporty-watch silhouette.

    Seikonaut Watch Case - 38mm [ULTRA THIN EDITION] - Solid - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    Seikonaut Watch Case - 38mm [ULTRA THIN EDITION]
    from $120 SGD
    Seikonaut Watch Case - 38mm [ULTRA THIN EDITION / TITANIUM] - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    Seikonaut Watch Case - 38mm [ULTRA THIN EDITION / TITANIUM]
    $219 SGD
    Seikonaut Bracelet 20/16mm - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    Seikonaut Bracelet 20/16mm
    $99 SGD
    Seikonaut Bracelet 20/16mm [TITANIUM] - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    Seikonaut Bracelet 20/16mm [TITANIUM]
    $159 SGD
    Seikonaut Watch Case - 36mm - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    Seikonaut Watch Case - 36mm
    $239 SGD