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DatejustDaydateDaytonaHublotNautilusAquanautRoyal OakSubmariner/GMT/Yacht MasterSKX 007Submariner / GMT
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Shop/Seiko Mod Submariner/GMT/Yacht Master 40mm/Standard
Seiko Mod Black Marinemaster
Seiko Mod Submariner/GMT/Yacht Master 40mm

Standard

RM788RM1,288
Dial color
  • Premium look without the luxury price
  • Hand-assembled by professionals
  • 1-year warranty + worldwide express shipping

Premium hand-assembled Seiko mod — Submariner / GMT collection.

316L stainless steel case and bracelet

Sapphire crystal with anti-reflective coating

Seiko automatic movement

1-year warranty · Express worldwide shipping

Genuine Seiko automatic movement

Sapphire crystal with anti-reflective treatment

316L stainless steel case and bracelet

Free express shipping on qualifying orders with duties included.

Assembly and quality testing typically take 3–7 working days before dispatch.

1-year warranty on manufacturing defects — contact us for support.

An automatic watch recharges through the motion of your wrist — no battery required.

If unworn for 42+ hours, wind the crown slightly or wear it again to restart.

This mechanical craftsmanship offers a refined alternative to quartz movements.

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 Submariner/GMT/Yacht Master 40mm

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Seiko Mod Submariner/GMT/Yacht Master 40mm

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RM818/RM1,288
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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
StandardRM788
The Watchpiece

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

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