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MARINER MOD - DEEPSEA BLUE

€249.00

incl. VAT, free insured shipping

Available — assembled & regulated for you
Seiko Movement Sapphire Crystal 316L Steel
Ships in 7–10 business days

Your build:

Case back

1

14-day returns · Ships from Germany · 2-year warranty

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14-Day Returns

Money-back guarantee

Adjustable Strap

Fits all wrists

2-Year Warranty

For worry-free wear

Description

The Mariner Mod Deepsea Blue is a sport-diver Seiko mod built for people who want genuine dive-watch character without the five-figure price tag. Its deep-ocean blue dial pulls your eye immediately — a rich, saturated tone that reads differently under tungsten light than it does in full sun, giving the watch a restless depth that flat colours never achieve. The bidirectional bezel lets you track elapsed time the way a real dive instrument should, and the 40 mm stainless steel case sits squarely in the sweet spot between wrist-filling presence and all-day comfort.

Movement

Inside sits the Seiko NH35 automatic movement — hacking, hand-winding, roughly 41 hours of power reserve, 21,600 bph. It is the same workhorse found in watches costing three or four times more, and it earns that reputation every day. Every unit leaves the MedoMods bench regulated and function-tested before it ships.

Case & Crystal

The 40 mm case is machined from stainless steel, polished where it should be polished, brushed where it should be brushed. The screw-down crown keeps the rated 5 ATM splash and rain resistance intact under daily conditions. Up top, a sapphire crystal with anti-reflective coating keeps glare out and legibility in — at any angle, in any light.

Dial & Design

Deepsea Blue is not a generic navy. It is the particular shade you see at twenty metres below the surface — cool, saturated, with just enough luminance to glow under Super-LumiNova indices. Applied hour markers and hands are loaded with lume for confident low-light reading. The bidirectional bezel adds a functional, sporting edge without making the watch look like it is trying too hard.

On the Wrist

Available on a stainless steel bracelet or a rubber strap — both fitted with a safety folding clasp. The bracelet gives the Mariner a polished sport look; the rubber strap makes it feel like proper beach or pool kit. Case back is your choice: exhibition sapphire if you want to watch the rotor spin, or solid steel for a cleaner silhouette.

Why MedoMods

Every Mariner Mod is hand-assembled by MedoMods in Germany. EU-warehouse shipping means no customs surprises and no weeks of waiting — and you receive a watch built by someone who treats the craft seriously, not a production line optimising for throughput. If you have ever wanted a diver that genuinely earns its look, this is it.

  • Case: 40 mm stainless steel – balanced and elegant

  • Movement: Automatic Seiko NH35 – reliable and precise

  • Crystal: Sapphire with anti-reflective and scratch-resistant coating – clear readability

  • Luminosity: Super-LumiNova – excellent visibility in the dark

  • Crown & Water Resistance: Screw-down crown, 5 ATM – secure and suitable for everyday wear

  • Bezel: Bidirectional – perfect for tracking multiple time zones

  • Strap: Adjustable, available in stainless steel or rubber with a safety folding clasp

  • Case Back: Transparent or solid stainless steel – depending on preference

Specifications
Movement
NH35 Automatic
Case
40 mm
Crystal
Sapphire Crystal
Material
316L Stainless Steel
Water resistance
5 ATM
Dial
Blue Dial
Shipping & returns

Every watch is hand-assembled to order and ready to ship in 7–10 business days. Insured shipping from Germany. 14-day returns and a 2-year movement warranty.

FAQ
What is a Seiko mod?
A Seiko mod is a modified watch that uses an authentic Seiko movement, combined with third-party high-quality parts. Most of our watches come in stainless steel with sapphire crystal.
How long will it take to receive my watch?
When you place an order, we order the parts for your design right away. The entire process usually takes about 20 days: parts normally arrive within 2–3 weeks (including weekends). When we receive the parts, we build the watch the same day and ship it as soon as possible after assembly. Watches in stock from time to time ship faster.
Can I customize the logo or remove it?
Absolutely. Send us an email with your order number and full name after ordering, stating your desired design or that you want to remove the logo. You can also leave a note at checkout, or contact us before ordering.

MedoMods is an independent maker and is not affiliated with or endorsed by Seiko, Rolex, Patek Philippe, Audemars Piguet or any other brands mentioned. Third-party model names are used descriptively (homage style) only.

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MARINER MOD - DEEPSEA BLUE

€249.00 · Clear case back

2-Year Warranty
14-Day Returns
Ships from Germany
Secure Checkout