Seiko Mod Nautilus | Full Black
Create yours in minutes • Ships in 48–72h
Free tracked delivery
Hand-assembled
2-year warranty
Watch Specifications
The Seiko Mod Nautilus Full Black is a custom Seiko Mod designed for those who seek distinction and daily performance. With its bold aesthetic and mechanical reliability, it's a statement piece that goes beyond standard watches.
Each Seiko Mod Nautilus Full Black is hand-assembled using carefully selected components like sapphire crystal, stainless steel case, and a precise automatic movement. Whether you're a seasoned collector or first-time buyer, this Seiko Mod is crafted for impact.
Seiko Mod Nautilus Full Black – Features
- Glass: Sapphire, Anti-reflective treated
- Dial: Nautilus Full Black
- Hands: Nautilus
- Case: Nautilus 41mm
- Thickness: 12mm
- Case Back: Sapphire glass
- Bracelet: Nautilus 25mm
- Bracelet Length: Customizable size
- Water Resistance: 100m
Every Seiko Mod Nautilus Full Black is built with care and tested for long-term precision and durability. Personal, solid, and timeless.
Assembled by hand. Built just for you.
Japanese Movement – Seiko Automatic
Mouvement : Seiko NH35a Automatic Mechanical
Fonctions :
- Automatic winding
- Hacking seconds
Power Reserve: 41 hours on full charge
Jewels: 24
Shipping & Delivery Times
Risk-Free Guarantee
If you’re not satisfied with your watch, you can return it within 30 days. This guarantee starts from the moment your package is delivered.
Assembly
It takes 3 to 5 business days to assemble and test your watch, ensuring optimal performance.
Shipping
Once assembled, your watch will be shipped, which typically takes 8 to 12 business days.
Overall Timeline
The entire process, from assembly to delivery, takes approximately 10 to 15 business days (Monday to Friday). This ensures every watch meets our high standards before reaching you.
Cost
Shipping is completely free.
Enjoy a worry-free experience with guaranteed quality and service!
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Inside the Craft of Your Timepiece
Renowned for its exceptional hardness, sapphire crystal is virtually scratch-proof and treated with anti-reflective coating — delivering perfect clarity in any light.
The same surgical-grade steel used by luxury Swiss maisons: hypoallergenic, corrosion-resistant, and engineered to last a lifetime while keeping its flawless polish.
Dial and hands glow with a vivid green lume, ensuring instant readability in low light and reinforcing the iconic identity.
Reliable Accuracy
Every movement is tested and fine-tuned to deliver outstanding precision, keeping time within just a few seconds per day.
Effortless Legibility
Luminescent dial and hands ensure perfect readability in any light — day or night.
Proven Durability
Engineered to resist shocks and withstand the demands of everyday wear.
MOVEMENT
CALIBRE SEIKO NH35A
Inside your watch beats the NH35A—an automatic calibre trusted by watchmakers worldwide for its reliability. A bidirectional rotor keeps it wound on the wrist, while stop-seconds and hand-winding give you exact control when setting the time. Carefully regulated by us, it delivers steady, day-to-day accuracy with the quiet confidence only a true workhorse can offer.
Automatic + Hand-wind
41-hour Power Reserve
24 Jewels • 3 HzSEE HOW YOUR WATCH IS BUILT
Need help?
FREQUENTLY ASKED QUESTIONS
A Seiko mod is a one-of-a-kind timepiece, custom-made and impossible to find in traditional retail stores.
Handcrafted by experts, these watches combine original Seiko components with carefully selected non-Seiko parts, chosen for their quality and style.
Please note that these are not official Seiko products. Our company is entirely independent and has no affiliation with Seiko or any other brand.
Each watch undergoes a series of rigorous tests to ensure its performance and reliability:
- Water Resistance: A thorough check of the water resistance to ensure perfect sealing.
- Demagnetization: A demagnetization process to preserve the proper functioning of sensitive components.
- Chronometer Adjustment: Precise adjustment of the watch to achieve accuracy within -5 to +5 seconds per day.
These quality checks are carried out with care before shipping, ensuring you receive a watch that is ready to use, reliable, and high-performing.
For every order, we provide you with the necessary tool to adjust the bracelet to your wrist yourself.
This allows you to easily customize the fit at home, at no extra cost.
Free Shipping
Fast & secure delivery, straight to your door
2-Year Warranty
Guaranteed peace of mind & lasting support
Hand-Assembled
Every piece crafted & quality-checked by experts
Designed in France
Refined aesthetics with timeless French elegance