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SEIKOSUB EDITION DEEPSEA DARK KNIGHT MOD

SEIKOSUB EDITION DEEPSEA DARK KNIGHT MOD

Note: This is a custom-built timepiece using TMI Seiko movement. Monomods is not affiliated with any watch brand.

$344.95 USD
In stock
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2-Year Warranty

30-Day Returns

🔒 Money-Back Guarantee & 180-Day Buyer Protection On All Credit Card Purchases

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Description & Specifications
INFO

 

The Seikosub Deepsea Mod Dark Knight Edition channels the raw power and mystery of the ocean’s depths with striking refinement. Its blue-to-black gradient dial evokes deepwater allure, enhanced by BGW9 blue lume for exceptional visibility in any light. Encased in a robust 43.5mm stainless steel body with a unidirectional ceramic bezel, it radiates confidence and endurance. A domed sapphire crystal with anti-reflective coating ensures clarity, while the solid stainless steel bracelet provides secure, lasting comfort.

Powered by the reliable NH35 automatic movement, it delivers precision, smooth winding, and a 41-hour power reserve. With a screw-down crown and luminous accents, this hand-assembled masterpiece unites durability and design. The Dark Knight Edition is crafted for those who pursue excellence and adventure—on land, at sea, and beyond.

 

SPECS

 

 

Specification Details
Case Material 316L Stainless Steel
Case Diameter 43.5mm
Thickness 15mm
Lug Width 21mm
Case Back Stainless Steel
Crown Screw-Down, Stainless Steel
Movement Seiko NH35 Automatic, 24 Jewels
Power Reserve 41 Hours
Accuracy -5/+15 Seconds per Day
Functions Manual & Automatic Winding, Hacking Seconds
Crystal Domed Sapphire, Blue Anti-Reflective
Bezel Unidirectional Ceramic
Dial Blue Gradient “Batman” with BGW9 Lume
Hands BGW9 Blue Luminous
Bracelet Stainless Steel with 3-Way Folding Clasp
Length Adjustable 15–23cm
Water Resistance 3 ATM
Features BGW9 Blue Illumination, Rotating Bezel.


Return Policy

Enjoy peace of mind with our 30-day money-back guarantee. If your purchase doesn’t meet expectations, simply return it within 30 days for a full refund—no questions asked. Shop confidently, knowing we’re committed to your complete satisfaction.

2 Years Warranty

Enjoy peace of mind with our complimentary 2-year extended warranty. Every watch is protected against manufacturing defects to ensure long-term reliability and satisfaction.

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Hand-assembled with care from sapphire crystal, ceramic bezels, leather or stainless steel straps, and Luminova — All powered by precise Japanese movements.

Monomods

Free shipping

180-Day warranty

30-Day returns

Based in the UK

Your signature timepiece

Why Monomods

Unlike mass-produced mods that cut corners, MONOMODS Watches delivers handcrafted, precision-built timepieces using only premium components and movements.

What Sets Us Apart
Handcrafted by professionals
Tested for waterproof resistance
Strict quality control & tested performance
Fast shipping & guaranteed delivery
Premium movements & high-grade parts
Warranty-backed quality you can trust

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Frequently asked questions

Are the watches waterproof?

Our watches have a 3ATM water resistance, meaning they handle splashes and rain but are not suitable for swimming or diving.

What warranty do you offer?

Every watch includes a 2-year international warranty covering mechanical defects and craftsmanship.

What movement does the watch use?

Each timepiece is powered by a reliable Japanese movement such as the NH34, NH35, NH70, or VK63 renowned for their precision, durability, and smooth performance. We carefully select these proven automatic and hybrid calibres to ensure every watch delivers lasting accuracy and mechanical excellence.

How long will delivery take?

Orders typically arrive within 5–14 days with free tracked shipping. You’ll receive tracking updates once your watch ships.

Can I return or exchange my watch?

Yes, you have a 30-day money-back guarantee from the day you receive your order. Contact support@monomods.com to start a return.

Can I request custom adjustments or strap changes?

Absolutely. If you’d like a different strap, bracelet, or color not listed on our site, contact our support team before ordering, and we’ll personalize it for you where possible.

Are you affiliated with Any other brands?

No. We’re an independent brand using authentic Japanese movements and custom components to create unique handcrafted timepieces.

What materials are used?

All watches are made with premium 316L stainless steel, sapphire crystal glass, and high-grade ceramic or alloy components for durability and clarity.

Do you offer engraving or personalization?

Yes. We offer custom engraving and personalization options to make your timepiece truly yours. Whether it’s a name, date, or special message, our team can engrave it discreetly on the caseback. Simply contact support@monomods.com before or after your order, and we’ll guide you through the options available.

What happens if my watch arrives damaged?

In the rare case your watch arrives damaged or defective, don’t worry — you’re fully covered. Contact support@monomods.com within 7 days of delivery, and we’ll arrange a replacement or repair at no cost. Every watch is protected under our 2-year warranty and 30-day money-back guarantee for your peace of mind.