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Assemble Diver Watch Case

The diver build. Done properly. Ready to wear.

Professional assembly for Lucius Atelier diver watch cases — SKX013 and SKX007/SRPD-footprint builds. We handle the complete build: case fitting, movement seating, crown and stem alignment, and the caseback press.

Every diver build is checked on the bench before it ships — movement fitting and alignment, crown and stem threading, crown position and winding function.

All assembly work is carried out in Singapore by experienced Seiko modders.

The trickiest build, done for you.
Your case and movement go onto our bench — and a finished, checked diver comes back, ready to wear.

The complete diver build.
Case, movement, crown, stem and caseback — assembled as one finished watch.

Every function tested.
Crown position and winding function tested, crown and stem threading verified, before anything ships.

3–5 day turnaround.
Approximately 3–5 business days of workshop time from receipt of parts.

Assembled in Singapore.
Built by experienced Seiko modders.

Heads up — parts not included

This is a labour service only. Bring your own case and movement, or purchase them separately alongside this service. Lead time is approximately 3–5 business days from receipt of parts.

    1. Full diver case assembly (case, movement, crown, stem, caseback)
    2. Movement fitting and alignment check
    3. Crown and stem threading verification
    4. Caseback press
    5. Crown position and winding function test

    Heads up: assembled watches require approximately 3–5 business days of workshop time before shipping.

    1. Cases Lucius Atelier diver-style watch cases — SKX013 and SKX007/SRPD-footprint
    2. Movements NH35, NH36, NH34

    Building an Explorer or Seikonaut case? See the Assemble Watch Case service instead.

Professional custom watch assembly service praised for exceptional craftsmanship. Customers said "the finishing on the case is as nice as a higher end Seiko" and "exceeded my expectations." Adriel's expert assembly ensures perfect alignment and premium results. Wide catalog of quality parts for unique builds. Quick service, excellent packaging, and regulated movements with impressive accuracy.

  • The finishing on the case is as nice as a higher end Seiko or Citizen watch.
  • It turned out much better than I had hoped.
  • All the parts are top notch and some really unusual faces
Quality (positive)Movement (positive)Hands (positive)Watch (positive)Bezel (positive)
  • 5 stars: 5 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
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Prajwol (Alexandria, US)
Super Professional

Huge shoutout to Adriel. the assembly came out perfect. Adriel is super helpful: he would answer all questions very wisely and even help me make some choices when i was confused. Everything looks clean and aligned, the watch feels premium on wrist, and the overall finishing is exactly what I hoped for. Super happy I went with the assembly service because it saved me time and the result looks professional.

R
Randall C. (Spring Hill, US)
GS style gmt build

I have just received my watch so I can't commit on durability, but the finishing on the case is as nice as a higher end Seiko or Citizen watch. I am impressed with the watch quality overall not perfect but for the price it is darn close and I would have them build me another watch again. The hour and minute hands line up perfect with the indices and the gmt hand darn near perfect. This is my first time having a watch built, and it has exceeded my expectations. The only real flaw was I made the wrong choice for the charter ring. So if you are hesitant on building a watch with Lucius Atelier don't be just throughly go over your options and go for it.
P.S. I have order a new charter ring from Lucius Atelier and I am going to try my hand at installing it. I'm just getting into the mod watches and I hope I don't mess up the good job they have done for me, but want to learn how to work on them myself, so here's hoping!

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Nicholas T. (Melbourne, US)
Using this mod part for: SKX013
Custom SKX013 NH34 GMT build

I am very happy with the experience I’ve had through this shop. I’ve been on the fence for a long time about buying a new seiko and modding it myself, and after a lot of research I decided to pull the plug on having a custom watch built for me. I was pretty impressed with this shops catelog of parts, as I was looking to build a smaller watch based on the SKX013 platform with GMT function. I was sold when they offered a 36mm case that could fit the NH34 movement, along with proper GMT 24 hour bezel inserts that fit the SKX013 bezels. I decided to go with the Root Beer GMT bezel, and in person it has a very nice and unique deep bronze color to it in sunlight.

The service was extremely quick when I placed the order online (within a business day), I was initially worried they might have forgot to assemble the watch. Shipping wasn’t too long, as it did have to cross the whole Pacific Ocean and continental United States (I live in Florida). The watch was packaged very well, and it turned out much better than I had hoped.

I configured this watch to be a practical tool watch for my career in aviation, as the GMT function is perfect for keeping track of Zulu time, and the rotating GMT bezel is good for if I need to keep track of my arrival destination local time if in another time zone. I also chose their brightest BGW9-A superluminova for the dial and hands, and I must say when charged they will last the whole night and is very easy to read as I am either flying before the sun rises or long after the sun has set. The accuracy of the movement has exceeded what they guaranteed for the optional regulated movement, as within the first 5 days of continuous wear it had only gained about 12 seconds. The presidential clasp, **** down knurled crown, and coin edge bezel movement all have great fit and finish as well, no complaints as of yet. Again, I am super happy with this product, as it turned out not to be just a tool watch but a real looker too! Thanks Adriel for the amazing service and craftsmanship!

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Paul J. (London, GB)
Using this mod part for: SKX007
Stunning!

I had a complete diver constructed from scratch, so totally unique to me. All the parts are top notch and some really unusual faces - I went for the Seigaiha with polished blue Breguet hands with all other parts highly polished steel, result is unusual and stunning. Watch was also assembled for me by Adriel who did a first class job and sorted out delivery issues my end (nothing to do with him, local issues with drivers). All in all, great parts, quality, designs and top notch service. Can thoroughly recommend and will be back for more myself.

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Reinhold F. (Manila, PH)
Using this mod part for: Skx013
Assembled SKX013

Build was perfect, dial is lovely honestly i cant say anymore except it looks great!

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Prajwol

Hi, I’m preparing an order for a SKX013 Submariner 36mm NH34 GMT build and I plan to add Assemble Diver Watch Case.

Just wanted to confirm: if I order all compatible parts from Lucius Atelier (case, movement, dial, hands, GMT hand, chapter ring, crystal, bezel, insert, crown, caseback, and bracelet), does Assemble Diver Watch Case cover assembly of the full watch head / complete watch using those parts?

Also, does the diver assembly service include things like:

chapter ring alignment

hand/GMT hand installation and clearance check

bezel + insert installation

gasket installation / sealing for normal daily wear

Thanks!

Adriel from LuciusAtelier.com

Hi Prajwol,

Thanks for expressing interest in our mod parts!

Yes, that is correct. If you order all compatible parts from us and add “Assemble Diver Watch Case” to your cart, the watch will be assembled into a complete timepiece ready to wear.

As long as all parts selected are compatible within the same case ecosystem, everything will be assembled accordingly.

Hope this helps. Let me know if you have anymore questions.

Best regards,
Adriel
Lucius Atelier | SEIKO Mod Parts