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    Build Your Own Visually

    SKX013 Diver 38 Black Ultra Thin Edition — side profile showing 10.86mm ultra-thin case thickness

    Ultra Thin Edition
    Seikonaut Bracelet 20/16mm [TITANIUM] - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

    Seikonaut
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    Build Your Own Visually

  • SKX013 Diver 38 Black Ultra Thin Edition — side profile showing 10.86mm ultra-thin case thickness

    Ultra Thin Edition
  • Seikonaut Bracelet 20/16mm [TITANIUM] - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

    Seikonaut
    • Home / Products / NH Movement Rotor - FPJ Diamond - Rose Gold
    NH Movement Rotor - FPJ Diamond - Rose Gold - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    NH Movement Rotor - FPJ Diamond - Rose Gold - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    NH Movement Rotor - FPJ Diamond - Rose Gold - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts
    NH Movement Rotor - FPJ Diamond - Rose Gold - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

    NH Movement Rotor - FPJ Diamond - Rose Gold

    $47 SGD
    Worldwide
    Delivery         Express
    2–4 Days         Replies In
    1 Day         30-Day
    Returns

    The movement, dressed. FPJ Diamond in rose gold. Seen through the caseback.

    A decorated rotor turns the one moving part you see through an exhibition caseback — the weight that swings as you wear the watch — into the finished centrepiece of the movement.

    This is a drop-in NH movement rotor — FPJ Diamond, finished in rose gold by PVD (physical vapour deposition), so the colour is part of the metal's surface, not a layer of paint that can chip or peel.

    Swapping it is the simplest mod there is — a single screw, no movement surgery, no watchmaker.

    One screw. Two minutes.
    You're not opening the movement — just trading the bare oscillating weight for a decorated one.

    Seen through the caseback.
    The rotor is the first thing the eye lands on behind an exhibition sapphire — the part that moves. Decorate it and the whole movement reads as considered.

    PVD, not paint.
    The rose gold is laid down by physical vapour deposition — bonded into the surface, not brushed on. It won't flake, and it can't be stripped back to bare steel.

    A two-minute mod.
    It seats on the rotor post and holds with a single screw. No movement disassembly, no special tools, no risk to the calibre.

    Built for the NH family.
    Machined to Seiko's OEM rotor geometry — 0.15mm thicker to carry the CNC decoration — and tested to fit the full NH, 4R and 7S automatic line.

    To see it, you'll want

    An exhibition caseback. A decorated rotor only shows behind a sapphire (exhibition) caseback — a solid steel caseback hides the movement entirely.

    A matching bridge. For the complete look, pair the rotor with a decorated NH movement bridge in the same finish.

    • Finish & Build

      1. Quality Swiss Production Quality, ISO 9001 Certified
      2. Finish FPJ Diamond · Rose Gold · PVD coating
      3. Construction 0.15mm thicker than the Seiko OEM rotor, to carry the CNC decoration

      Compatibility

      1. Fit Movements 7S26, 7S36, 4R15, 4R35, 4R36, 6R15, NE15, NH25, NH26, NH34, NH35, NH36, NH37, NH38, NH39, NH70, NH71, NH72
      2. Caseback Exhibition (sapphire) caseback required to display

    • To allow for CNC decoration, the decorated rotor is 0.15mm thicker than the Seiko OEM rotor. Each rotor is tested to fit all our bridges, cases and casebacks.

      Below is Seiko's technical drawing . As long as the case and caseback follow Seiko's OEM specification — a 0.4mm gap between the rotor and caseback — the rotor fits. If those parts deviate from Seiko OEM dimensions, the rotor may be incompatible.

      SEIKO NH Rotor and Caseback clearance drawing
      1. 1x NH Movement Rotor

      All photos of watches with modification parts are for illustration purposes only and are not included with modification parts purchased.

    • Fitting a rotor is the easiest mod there is:

      1. Unscrew the existing rotor screw with a 2–3mm flat screwdriver and lift the old rotor off.
      2. Seat the decorated rotor on the post.
      3. Screw it back down — done.

      New to modding? Start with Seiko Modding: The Complete Build Guide , or browse NH Movements to build around it.

    Questions, Answered

    Everything worth knowing before you build.

    Will a decorated rotor fit my movement?

    Yes — it fits the full Seiko NH automatic family and its relatives: 7S26, 7S36, 4R15/35/36, 6R15, NE15, NH25/26, NH34, NH35, NH36, NH37, NH38, NH39, and the NH70/71/72 skeletons. The rotor screws onto the standard rotor post. What matters is caseback clearance: as long as the case and caseback follow Seiko's OEM specification — a 0.4mm gap between rotor and caseback — it fits. Non-OEM parts with tighter clearance may not.

    Do I need an exhibition caseback to see the rotor?

    Yes. A decorated rotor is only visible through a sapphire (exhibition) caseback. A solid steel caseback covers the movement entirely, so the decoration behind it would never be seen — if your build uses a solid caseback, a decorated rotor won't show.

    Is the finish paint? Will it wear off?

    It isn't paint — it's PVD (physical vapour deposition), bonded into the metal's surface. It won't chip or peel the way a painted coat would, and it can't be stripped back to bare steel; abrasive attempts only ruin the part. Treat the colour as permanent.

    Why is the decorated rotor slightly thicker than a stock Seiko rotor?

    By 0.15mm. That extra material is what lets the decoration be CNC-machined into the face. Every rotor is tested to fit our cases, bridges and casebacks, and the small increase stays within Seiko's OEM clearance.

    Is fitting a decorated rotor difficult?

    No — it's the easiest Seiko mod there is. Unscrew the single rotor screw, lift off the old rotor, seat the decorated one, and screw it back down. There's no movement disassembly and no watchmaker required.

    This rose gold rotor receives universal praise from customers. Shoppers highlight "great quality," "stunning" detailing, and excellent engraving. Customers appreciate the "fast delivery" and competitive pricing. The rotor adds a "wow factor" to custom watch builds, with reviewers noting it "looks and feels great" as a finishing touch.

    • Truly a lovely finishing touch.
    • Great quality rotor, great price, fast delivery
    • Great rotor, detailing is well done, engraving looks and feels great.
    Detailing (positive)Rotor (positive)Service (positive)Engraving (positive)Delivery (positive)
    • 5 stars: 7 (100%)
    • 4 stars: 0 (0%)
    • 3 stars: 0 (0%)
    • 2 stars: 0 (0%)
    • 1 star: 0 (0%)
    E
    Emile V. (Montbonnot-Saint-Martin, FR)
    Using this mod part for: Datejust hommage Watch
    Awesome !!!

    I just received it and I love it !! Can’t wait put put it in place

    Emile V. review photo
    M
    Mark M.
    Using this mod part for: Mostly building Seiko based divers, but have also built sports, dress and floggers. Have also done a couple OEM restorations
    Great Company

    The selection is great, the turn time is wonderful, and the service is impeccable . Thanks for doing what you do, Adriel!

    M
    Markus K. (Helsinki, FI)
    Using this mod part for: Aftermarket Nautilus style case
    Looks and feels great!

    Used this in combination with a decorative bridge and the result is amazing! Truly a lovely finishing touch.

    J
    Jeff J. (Ilford, GB)
    Using this mod part for: Sxk007
    Beautiful rotor

    Great quality rotor, great price, fast delivery

    M
    Matthew S. (Burleson, US)
    Using this mod part for: SKX007
    Stunning

    I'm in the process of doing a rose gold SKX 007 custom watch build for a client. I wanted to go with an open case back. This is definitely going to add the wow factor.

    J
    Joe
    Using this mod part for: Seikonaut

    Fire

    E
    Eric S. (Albuquerque, US)
    Using this mod part for: Custom watch w/nh36
    Excellent rotor

    Great rotor, detailing is well done, engraving looks and feels great.

    D
    Dez

    Have you got some pictures of this fitted? When will the gold one come back into stock?

    Adriel from LuciusAtelier.com

    Hi Derek,

    Thank you for expressing interest in our mod parts!

    Unfortunately, I don’t have any photos of the NH Movement Rotor - FPJ Diamond - Rose Gold fitted into a build. However, it’s designed to fit seamlessly with NH movements and add an elegant touch to your watch.

    As for the Yellow Gold version, I believe that’s the one you’re referring to. Currently, we don’t have plans to restock it, as we are potentially discontinuing rotors altogether. If you’re considering adding one to your collection, I’d recommend securing what’s available now before they’re gone.

    Feel free to reach out if you have any other questions—I’m happy to assist!

    Best regards,
    Adriel
    Lucius Atelier | SEIKO Mod Parts

    M
    Mark P.

    What is this made of? Brass?

    Adriel from LuciusAtelier.com

    Hello Mark!

    Thanks for expressing interest in our mod parts!

    >> What is this made of? Brass?
    Weight is tungsten, the rest is copper.

    Hope this helps. Let me know if you have any more questions.

    Cheers,
    Adriel

    W
    Wal

    Does this come with a screw driver specific for replacing the rotor?

    Adriel from LuciusAtelier.com

    Hello Waleed!

    Thanks for expressing interest in our mod parts!

    >> Does this come with a screw driver specific for replacing the rotor?
    No. It does not. You will need to procure your own watch tools to mod your timepiece.

    Hope this helps. Let me know if you have any more questions.

    Cheers,
    Adriel

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