Nomods Aquanaut-Inspired Seiko Mod with Black PVD Finish and Blue Rubber Strap

Aquanaut-Inspired Seiko Mod with Black PVD Finish and Blue Rubber 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 PVD Skeleton Mod with Rosegold Dial & Blue Strap (40mm)

This 40mm Seikonaut build makes a statement with dynamic color play and open mechanical depth. The black PVD case contrasts sharply with rosegold hands and markers, while the vivid blue strap adds a modern, sporty edge that lifts the entire design.

At the center is the Seiko NH72 skeleton movement, fully exposed and golden beneath the dial — creating a visual experience that outshines a basic Seiko Nautilus open heart layout. Rather than just a partial cutout, this mod offers a fully open dial where the entire movement comes to life.

The warm tones of the dial reflect beautifully against the dark case and golden bridges, while the blue strap ensures this build never fades into the background. Compared to a classic Seiko dial, this configuration feels alive — detailed, moving, and built to engage.

Crafted with premium Seiko mod watches components, this Seikonaut merges refined watchmaking with bold personality, offering both substance and presence in a wearable, everyday package.

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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