Movements
Learn about NH35, NH36 and NH34 automatic movements and discover what to consider before buying one.
Movement GuideWatch Modding Made Simpler
Building a custom automatic watch can seem complicated when you're faced with movements, cases, dials, hands, crystals, bezels and tools. UK Watch Mod Hub brings those components together in one place, helping beginners understand what they need and how the parts fit together.
Explore Watch Mod Parts
Start with the components that make up a custom automatic watch.
Watch Cases
Explore case styles, movement compatibility, case sizes and important features to check.
Case GuideDials & Hands
Understand dial sizes, hand compatibility and how different combinations change the character of a build.
Dial & Hand GuideCrystals & Bezels
Compare sapphire and mineral crystals, bezel styles and other finishing components.
Crystal & Bezel GuideWatch Tools
Discover the basic tools beginners may need when assembling and working on custom watches.
Tool GuideStart With a Watch Mod Guide
Useful information before you start buying components.
What Parts Do I Need to Build a Watch?
Understand the essential components involved in building a basic automatic watch and what each part does.
Start Learning →Understanding NH35 Compatibility
Before buying parts, learn why movement, case, dial and hand compatibility matters.
Explore NH35 →Plan Your Custom Watch Build
Use the build calculator to get an indication of the parts cost before you start shopping.
Calculate Cost →What Will Your Watch Cost?
Choose your main components to get a quick indication of what a custom automatic watch build could cost.
ESTIMATED PARTS TOTAL
£105
Indicative parts estimate only. Prices vary between sellers and listings. Shipping, tools and optional components are not included.
Find Parts for This BuildHow Watch Modding Works
A simple starting point for building your first custom automatic watch.
1
Choose a Movement
Start with a movement such as the popular NH35 and understand its compatibility requirements.
2
Choose a Case
Select a case designed to accommodate your chosen movement and other components.
3
Choose Your Style
Select your dial, hands, crystal, bezel and bracelet or strap.
4
Build It
Assemble your components carefully and enjoy creating something unique.
See What's Possible
Visual introductions to automatic watch building and NH35 projects.
Complete NH35 Custom Watch Build
See how individual components can come together to create a complete automatic watch.
Find Build PartsStep-by-Step NH35 Assembly
A visual introduction to the process of assembling an NH35-based custom watch.
Browse NH35 PartsNew to Watch Modding?
You don't need to buy everything at once. Start by understanding the movement and compatibility, then choose the parts that fit your planned build.
Start With the Movement
The movement influences which cases, dials and hands
can be used in your build.
Check Compatibility
Never assume two watch components will fit together.
Check the specifications before buying.
Take Your Time
Watch modding rewards patience, preparation and
careful handling of small components.
Watch Modding Questions
What is watch modding?
Watch modding involves assembling or modifying a watch using compatible components such as a movement, case, dial, hands, crystal, bezel and strap or bracelet.
Is the NH35 good for beginners?
The NH35 is widely used for custom automatic builds and has a large ecosystem of aftermarket components, making it a popular starting point.
What parts do I need to build an automatic watch?
A typical build may require a movement, compatible case, dial, hands, crystal, crown, stem and bracelet or strap. Tools may also be required for assembly.
How much does a custom watch cost?
A basic build can often be assembled for roughly £90–£150 in parts, although prices vary significantly depending on the components selected.
Where can I find watch mod parts?
Our component guides explain what to look for and provide convenient links for browsing relevant watch mod parts on eBay UK.
Ready to Start Your Build?
Explore movements, cases, dials, hands, crystals, bezels and tools, then start putting together the custom automatic watch you've had in mind.
Explore Watch Mod Parts on eBay UK