Nomods Custom Seiko Nautilus Build – Black PVD Case, Rosegold Dial, Black Strap

Custom Seiko Nautilus Build – Black PVD Case, Rosegold Dial, Black Strap

$290.00
/
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We accept returns/exchanges according to our policy for unworn items in original condition. Custom changes may have different terms — contact us for questions

Seikonaut – Black Skeleton Seiko Mod with Rosegold Dial & Black Strap (40mm)

This 40mm Seikonaut fuses the stealth of black PVD with the warmth of rosegold in a striking skeleton layout. With polished copper-tone dial details set over the fully open NH72 movement, and paired with a smooth black rubber strap, this build is moody, modern, and unapologetically refined.

The skeletonized dial goes far beyond the peekaboo look of a typical Seiko Nautilus open heart — revealing the entire movement, from gear train to balance wheel. It’s a complete departure from the traditional Seiko dial, offering visible complexity and true mechanical character.

Whether you’re looking to upgrade your daily driver or build something with edge, this Seiko mod watch delivers both presence and polish. The combination of dark tones and gold-accented depth gives it the feel of a boutique Swiss piece — but made with accessible Seiko components that modders trust.

A flawless pick for anyone chasing bold contrast and modern watchmaking aesthetics.

Disclaimer: This is a custom-built watch assembled by us using genuine TMI (Time Module Inc.) movements, a subsidiary of Seiko Instruments Inc., part of Seiko Group Corporation.
This product is not an official Seiko watch and is not endorsed by or affiliated with Seiko Group Corporation or its subsidiaries.

Other Colors

FAQs

Nomods is based in Oslo, Norway. We offer shipping from our workshop here, or directly from our factory depending on buyers location. Read more about this in our shipping policy!

We do not offer counterfeit logos on our products.

Contact us for a customized logo

If you are having a hard time removing the screws from the bracelet, take the case and bracelet under some warm soapy water and wiggle each link back and forth. This will clean out residue from production which makes the screws easier to remove and improve the bracelet quality over all

AR coating stands for Anti reflective coating and reduces the reflection in the crystal enhancing visibility. Blue AR has a slightly tinted reflection while Clear AR has not.

Scroll down to see the comparison!

No it does not! Our 37mm Royal Oak Seiko Modding case arrives as one complete case, and is ready to house a movement straight from the box.

In order to make this Seiko Mod Case as thin as possible, there is limited room in the back of the case. Therefore some custom NH35 rotors do not fit. Pay close attention to the respective rotor. Does it exceed the height of the middle screw? If yes then it may be too thick for this case.

We recommend a 28.5/29mm dial for our 37mm Royal Oak Case. The typical 31.8mm mod dials that many Royal Oak Mod Cases use are too big.

Clear vs Blue Anti-reflective Coating
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