Nomods Seikonaut / Nautilus Style Seiko Modding Case Ultrathin Gold

$149.00

Tax included.

Caseback

Exhibition Caseback

Solid Caseback

Anti-reflective Coating

Clear AR

Blue AR

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Note: This is a pre-order of the case only. Final production may vary slightly from current specifications.

The Nomods Ultra Thin Yellow Gold Seikonaut case combines luxury finishing with record-level slimness for Seiko modders. Measuring just 9.95 mm (closed) and 10.3 mm (open caseback), it delivers a refined Nautilus-inspired design with balanced proportions and exceptional wearability. Compatible with NH35, NH36, NH38, NH70, NH71, and NH72 movements, it fits 30.8 mm dials—ideal for skeleton, open-heart, or classic Seiko builds.

• Dimensions: 40 mm (10H–4H) × 38 mm (12H–6H)
• Material: 316L stainless steel with 20-micron yellow gold plating
• Crystal: Sapphire with clear or blue AR coating
• Water Resistance: 50 m
• Includes: Case, Caseback (solid or open), Crown, Gaskets

Built for modders pursuing a refined, high-end aesthetic, this yellow gold Seikonaut case offers premium durability, precision fitment, and the luxurious tone expected from a true top-tier Seiko mod build.

Our watches can easily be adjusted to fit your wrist perfectly. With our watches we include a tool so you can wear it as soon as it has arrived!

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NAUTILIUS

Name: Yellow Gold Seikonaut Seiko Mod Case (Ultra-Thin)
Brand: Nomods
Price: 149.0 USD
Availability: InStock

Discover the Nautilus Seiko Mod, a premium watch featuring a custom dial and hands for a refined, luxurious look. Inspired by high-end designs, this 39.5mm timepiece is powered by the reliable Seiko NH72 movement and crafted from durable 316L stainless steel. With 100M water resistance and a sapphire crystal, it’s built to withstand daily wear.

Perfect for watch enthusiasts seeking both style and performance Free worldwide shipping included.

FAQs

A “Seiko Mod” refers to a custom Seiko watch that has been altered to match an individual’s style or functional needs.

Modifications can be purely aesthetic, such as changing the dial, case, hands, or bezel, or functional, such as improving movement accuracy or durability with features like water resistance. These modifications provide watch enthusiasts the opportunity to create a unique timepiece that fits their personal preferences and enhances their watch-wearing experience.

Seiko modding is a fun and creative way to customize your watch. If you’re just starting, you’ll need basic tools and parts like dials, braces and hands to personalize your timepiece. Explore our shop forcompatible parts, and feel free to reach out for help identifying the right components or installing them. Our resources are here to make your modding journey easy and enjoyable!

Shipping from our workshop in Norway has an estimated delivery of 7-14 days worldwide.

Yellow Gold Seikonaut Seiko Mod Case (Ultra-Thin)

NAUTILIUS

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Yellow Gold Seikonaut Seiko Mod Case (Ultra-Thin)

NAUTILIUS

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