Seiko Mod Watches
Seiko mod watches are hand-assembled timepieces built around a genuine Seiko automatic movement — modified ("modded"), not mass-pressed. Each watch pairs an original Seiko movement with selected parts to form a design of its own, styled after iconic references. Here is the full range of modded Seiko watches.
What makes a Seiko mod watch?
A modded Seiko watch keeps the heart — the genuine Seiko NH35 automatic movement — and swaps the outer parts for matched components: case, dial, hands, bezel and bracelet. The result is a custom look that stays a real mechanical watch, not a quartz copy and not a counterfeit.
Which styles are available?
From diver and GMT watches through Datejust and Day-Date style to integrated sport designs: our collections cover the most popular looks. Each can be bought ready-made or built to your taste in the configurator.
What do you get at MedoMods?
Every watch is individually assembled, regulated and quality-checked before shipping:
- Genuine Seiko NH35 movement, hand-winding and hacking seconds
- 316L stainless steel, scratch-resistant sapphire crystal, 5 ATM
- Worldwide insured shipping with tracking, taxes and duties included
- 2-year warranty, a real point of contact
MedoMods is an independent maker and is not affiliated with Seiko.
Keep reading & matching models
Frequently asked questions
Are Seiko mod watches real Seikos?
The movement is a genuine Seiko NH35. The case, dial and other parts are high-quality aftermarket components. So it is a modified watch built on a Seiko movement — not a factory Seiko and not a counterfeit.
How reliable is a mod watch?
The NH35 movement is known for its ruggedness and is easy to service. Every watch is regulated and checked here before it leaves.
Can I design my own Seiko mod?
Yes. In the configurator you pick the case, dial, bezel, hands and bracelet — we then assemble the watch for you.
Ready? Build your Seiko mod or browse the collections.
Browse all collections