Seiko SKX007 Mod – Blacked-Out NH35 Build by Elliot Coll
This article documents a fully blacked-out Seiko SKX007-style mod built around the NH35 automatic movement by watch modder Elliot Coll. It is featured here with independent editorial context, build analysis, and attribution to the original creator.
The project is useful because it shows what a clear design direction can do with accessible parts. Every major component was sourced from AliExpress, but the result does not feel random. The build works because the parts support one idea: a stealth-focused SKX007-style watch with texture, control, and restraint.
Why This Build Works
A blacked-out watch can easily become flat. If everything is black, the case, dial, hands, bezel, and bracelet can disappear into one dark block. This build avoids that by using texture, small contrast points, and a coherent parts selection.
The fish-scale dial pattern gives the watch depth without adding another color. The black gunmetal case and bracelet keep the watch unified. The chapter ring markings provide enough orientation to make the dial readable. The black date wheel keeps the NH35 practical without creating a white date-window distraction.
That is the real lesson here: monochrome design still needs hierarchy. A black watch is not automatically stylish. It needs surfaces, contrast, and proportion to keep the eye interested.
Watch the Original Elliot Coll Build Video
The original video below comes from Elliot Coll. It shows the build process and gives useful context for the parts, assembly, and final result.
Project Overview
- Base platform: Seiko SKX007-style custom build.
- Movement: Seiko NH35 automatic movement with black date wheel.
- Case: Black gunmetal SKX007-style case.
- Crown position: 3 o’clock.
- Dial: Black dial with fish-scale pattern.
- Indices: Black indices with black lume.
- Hands: Black arrow-style hands with black lume.
- Bezel insert: Black 60-minute insert.
- Chapter ring: Black chapter ring with white 60-minute markings.
- Rotor: Custom black rotor with decorative pattern.
- Bracelet: Black gunmetal bracelet.
The black date wheel is a small but important decision. Many otherwise cohesive mod builds are interrupted by a bright white date window. Here, the date wheel supports the stealth concept instead of fighting it.
AliExpress Parts and the Reality of Modding
All primary components in this build were sourced from AliExpress. That does not automatically make the build weak, and it does not automatically make it strong. In Seiko modding, parts quality can vary, so the builder’s eye matters.
The skill is not only finding parts. It is choosing parts that belong together, checking fit, understanding compatibility, and assembling them cleanly. A cheap-looking build often fails because the choices are scattered. A strong affordable build usually has a clear concept and fewer contradictions.
The original post included AliExpress reference links from the creator. Those links appear to be affiliate links used by Elliot Coll. They are useful for transparency, but readers should still check compatibility, seller reputation, measurements, and current availability before ordering parts.
Why the NH35 Makes Sense Here
The NH35 is one of the most common automatic movements in Seiko-style modding because it is reliable, widely supported, and compatible with a huge parts ecosystem. For a build like this, the movement choice is practical rather than exotic.
The NH35 also supports the date function, which makes the black date wheel relevant. In this build, the date does not become a visual problem because it has been brought into the same dark design language as the rest of the watch.
For more context, read Why NH35 Movements Are Popular in Seiko Mods.
Design and Visual Balance
The strongest part of this SKX007 mod is the way it uses black without making the watch visually dead. The fish-scale dial does a lot of work. It gives the face of the watch a texture that catches light, while the dark hands and indices preserve the stealth mood.
The white chapter-ring markings are also important. They give the eye a reference point and keep the watch from becoming unreadable at a glance. Without that small contrast, the build might look more dramatic in photos but less usable on the wrist.
This is a good example of restraint. The build does not need a bright seconds hand, a colored logo, or a loud bezel accent. It stays committed to the concept and uses texture instead of decoration.
Assembly Technique and Builder Approach
One aspect that stands out in Elliot’s work is the hand-setting technique. He uses Rodico extensively during placement, prioritizing control and stability as each hand goes down. Some builders prefer direct placement and use Rodico mainly for the seconds hand, but Elliot’s method is a valid, careful workflow.
There is more than one correct technique in watch modding. What matters is the result: clean alignment, no visible damage, no dust, no hand collision, and a watch that runs correctly after casing. In a blacked-out build, marks and dust can be especially visible, so clean handling matters.
For common problems to avoid, see Common Seiko Modding Mistakes.
Build Image

Where This Build Fits in Seiko Modding
This build is a useful example of what the SKX007-style platform can do. It is familiar enough to be accessible, but flexible enough to support a strong visual direction. That is why SKX-style builds remain popular in the modding world.
For beginners, the main takeaway is not “buy the same parts.” The better takeaway is: start with a clear design direction, choose parts that support it, and do not let one random detail break the whole watch.
Related reading: Seiko Mods: The Gateway to Custom Watches, How to Build a Seiko Mod, and Best Seiko Mods You Can Actually Build.
How This Differs From a Workshop Commission
This article is an Elliot Coll build breakdown, not a Rexx Timepieces build. That distinction matters. The value here for The Watcher HQ readers is the design analysis, attribution, and practical modding context.
If this kind of blacked-out direction makes you think about a personal build, then a workshop commission is the next step rather than simply copying a parts list. Rexx Timepieces custom watch builds can take a direction, dial idea, or case concept and turn it into a more personal project with direct workshop guidance.
Final Thoughts on This Seiko SKX007 Mod
This blacked-out Seiko SKX007 mod shows how a well-defined concept, disciplined assembly, and thoughtful component selection can turn accessible parts into a cohesive custom watch. The build works because it stays committed to one idea and uses texture, contrast, and careful assembly to make that idea wearable.
It is not the price of the parts that makes the watch interesting. It is the clarity of the direction. That is one of the best lessons modern Seiko modding can teach.




