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Shop/Seiko Mod Nautilus 40mm/Chronograph 40mm
Chronograph 40mm
Seiko Mod Nautilus 40mm

Chronograph 40mm

Coming soon — contact us to order

This model is not yet available to add to cart online. Contact us to place a custom order and we'll confirm pricing and lead time.

Contact us to orderOr send a message via our contact page
  • Premium look without the luxury price
  • Hand-assembled by professionals
  • 1-year warranty + worldwide express shipping
Loved by 100,000+ happy customersFree express shipping
2-year warrantyISO-certified durability
1-year warrantyCoverage on craftsmanship & defects
Craftsmanship

Premium craftsmanship in every timepiece

We do not do cheap replicas or mass-produced knockoffs. Every watch is crafted using premium-grade materials and precision-engineered parts, delivering the durability, weight, and feel of true luxury.

Details

Luxury in every detail

Seiko movement

Automatic, self-winding, 41+ hour power reserve, trusted for everyday accuracy.

Water resistant

3ATM rating for daily wear — protected against rain and everyday splashes.

Sapphire crystal

Ultra-clear, scratch-resistant glass keeps the dial sharp over time.

Stainless steel

316L steel case and bracelet — the same grade used by luxury watchmakers.

Collection

From the same collection

Seiko Mod Nautilus 40mm

Classic / Rose Gold 40mm
Seiko Mod Nautilus 40mm

Classic / Rose Gold 40mmWhite, Black, Blue, Tiffany or Rose Gold Brown

RM788/RM1,088
Open Heart 40mm
Seiko Mod Nautilus 40mm

Open Heart 40mmRose gold open-worked dial

RM899/RM1,088
Support

Frequently asked questions

Everything you need to know before and after your order.

A Seiko mod is a hand-assembled watch built from a genuine Seiko automatic movement and premium aftermarket components.

It brings iconic design language to a wider audience without counterfeit product.

Assembly: 2–4 working days. Quality testing: 1–3 days. Shipping: 4–8 working days.

Total lead time is typically 7–15 working days. Duties are included in the listed price.

We include a complimentary sizing tool with every order (free of charge).

Follow the included guide carefully to adjust links for a secure, comfortable fit.

Use our configurator to choose case, dial, bracelet, and hands — or contact us for a fully custom build.

1-year warrantyPeace of mind after every purchase
Studio assembledBuilt by professional watchmakers
Free deliveryExpress shipping worldwide
Premium qualityHighest standards for every model
The Watchpiece

Custom Seiko mods crafted with studio precision.
Timeless aesthetics for every wrist.

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