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Diver Watch Case - 42mm - SKX007/Submariner Edition (Fits NH & GMT Movements)

Fit Movement

ONLY 8 main components are needed to complete a watch.
Watch Case
Bezel Insert
Chapter Ring
Rotor (optional)
Movement Holder (optional)
Tweezer (optional)
**All components can be selected above.

Made exclusively for us with quality assurance by ISO 9001 Certified manufacturers.



GMT WIS are going to love this!

After almost a year of prototyping and as always, we are the first and proud to present to you a one of a kind diver watch case in the market that can fit both Japanese Seiko NH movements (NH35, NH36, NH37, NH38, NH39, NH70, NH71), Swiss ETA2893 and Sellita SW330 GMT movements. This watch case design will undoubtedly opens up a myriad of breathtaking opportunities for customisations.

This is also one of the first aftermarket case designed to fit high-end Swiss GMT mechanical movement, ETA2893 and Sellita SW330.

Designed uniquely with a submariner crown guard while retaining characteristic of an SKX.

That's right! This case fits ALL our SKX007 mod parts!! (Refer to FAQ below)

Water resistant to 200m.

Build your own watch from scratch!

This is 42mm case.
For 38mm case, visit here

***Read FAQ below for more details.

This 42mm diver watch case comes complete with:
  • 1x Case Body
  • 1x Bezel Click Spring
  • 1x Caseback (Solid or sapphire)
  • 1x Caseback gasket
  • 1x Crown
  • 1x Crystal Gasket
  • 2x Fat Spring Bars
  • 1x GMT Movement Spacer (If GMT movement is selected)
    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Case Material 316L Stainless Steel
    3. Case Diameter 42mm
    4. Case Thickness 10.3mm (Without bezel and crystal)
    5. Case Length 45.5mm
    6. Lug Width 22mm
    7. Caseback Screw down (Solid, Mirror polished or See-thru Sapphire)
    8. Crown Screw down
    9. Water Resistant 200m / 20atm
    10. Fit Movements NH35, NH36, NH37, NH38, NH39, NH70, NH71, ETA2893, SW330
    1. 1x Case Body
    2. 1x Bezel Click Spring
    3. 1x Caseback (Solid or sapphire)
    4. 1x Caseback gasket
    5. 1x Crown
    6. 1x Crystal Gasket
    7. 2x Fat Spring Bars
    8. 1x GMT Movement Spacer (If GMT movement is selected)

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

  • Recommended Mods With:

    1. Swiss Super-LumiNova® BGW9 Hands
    1. A Complete Guide On How To Mod Your SEIKO Watch Dial And Hands (Includes Photos & Video)
    2. Learn about fitting dials with four dial legs
    1. Does this watch case fit SKX007 aftermarket parts?
      Yes, only to our own SKX007 aftermarket parts since we have tested it. However, the two parts that are non-interchangeable and unique to this case are the crown and caseback, which are provided with this case.
    2. Is caseback for NH and ETA2893/SW330 GMT movements interchangeable?
      No, casebacks are NOT interchangeable. GMT movement is significantly smaller and slimmer than NH movement, its caseback is therefore significantly thinner than NH caseback.

      **Using GMT caseback on a case fitted with NH movement will inevitably damage the NH movement! Please ensure that you select the proper caseback for its respective movement.
    3. How is NH movement fitted into the watch case?
      NH movements can be fitted into the watch case directly without any addition GMT movement spacer. A unique NH caseback is required to secure and close up the watch case.
    4. How is ETA2893/SW330 GMT movement fitted into the watch case?
      A unique GMT movement spacer (gold colour in the photos) is required to encase the GMT movement inside the watch case. Thereafter, another unique caseback specifically for this movement is require to secure and close up the watch case.
    5. I have bought the NH movement version of this case. But I want to fit an ETA2893/SW330 GMT movement into it now.
      Too easy. You just need to purchase the GMT movement caseback and spacer separately, which you can select on this product page. That would allow you to fit GMT movement. Likewise, you can purchase NH movement caseback separately.
    6. Will your dial collections fit ETA2893/SW330 GMT movement?
      Yes and no. No because the dial legs are designed for NH movements. So current dial collections with NH dial legs will not fit into GMT movement. Furthermore, the date windows do not align between both movements. On the bright side, yes, it can still fit (only no date dials), but requires you to remove all the dial legs and manually align and adhere with adhesive (e.g. double-sided tape). We will release GMT movement-specific dials next year.
    7. Do you have ETA2893 or Sellita SW330 movement?
      Coming next year.
    8. Do you have ETA2893 or SW330 movement hands?
      Coming next year.
    9. Do you have bracelets for this watch case?
      We will be releasing our own selections of bracelet for our watch case in first half of 2021. Meanwhile, this case has lugs designed exactly like SKX007. Hence, OEM SKX007 bracelets can fit this watch case. We can only guarantee OEM SKX007 bracelets will fit. For aftermarket bracelets for SKX007, it may or may not fit. You will have to check with the respective retailer you purchased from.
    10. Hands installation on ETA2893/SW330 movement is more difficult than NH movements.
      Correct. Compared to NH movement, it is extremely difficult. ETA2893 and Sellita SW330 movements are smaller, slimmer and have about 40% lesser space between the hands as compared to NH movements. What's more, within the 40% lesser space, you need to fit 4 hands (hour, minute, second, GMT) instead of 3 hands (hour, minute, second). This makes your margin of error very tight when it comes to hands installation. Just take hour and minute hands spacing for example; On NH movement, there is 0.6mm space, while on ETA2893/SW330, there is 0.4mm space.

      **Unless you are an extremely experienced modder or a certified professional watchmaker, we do not recommend any individual to work with GMT movements.

Customer Reviews

Based on 7 reviews
Brian (Dallas, US)
Using this mod part for: Seiko SRPD71K2
Amazing Finish and quality

I've used custom cases from 4-5 different sellers and this, my second from Lucius Atelier, is as nice or nicer than anything I've seen. High quality finishes, precise and refined edges and details and a high-end appearance are among the pros. My one con is that other manufacturers bezels, including one from a Seiko 5 SRPD, are a very tight fit and difficult to work with. I recommend getting a bezel from the same seller.

Nathan L. (West Bloomfield, US)
Gold standard

Adrian and the team does a great job and stands by the quality of their products, highly recommend this case!

Dave (Calgary, CA)
Using this mod part for: Skx
2893 watch case 42mm

Love the case. Everything fits the way it’s supposed to. If I had one complaint is that the bezel makes the watch very thick. It’s be nice to have a submariner type lower profile. Otherwise it makes a nice GmT watch.

ThorM (Svortland, NO)
The nicest ø42mm skx case

Polished and brushed top lug-surface makes a distinct transition. The crown guard and crown are almost flush and proportional, which makes it looks cool and stand out from other 3 o'clock crown guards. Short lug to lug is great.

Zero problem with fit and finish. I however didn't use the supplied case back gasket which was subpar quality/fit.

Tylerz_mod (Le Raincy, FR)
Beautiful case!

First time I was using a sub case style for a mod. So I have to choose the best quality for this and here we go. All parts match smooth with this case, no problem during the build. The caseback close perfectly the case.
Very high quality caseset, highly, recommended for quality mod on skx base.

Omar S. (Concord, US)
Using this mod part for: 007 / aftermarket cases
So excited to find this

I have been looking for a case for the ETA 2893-2 movement. Purchased this one - I goofed on the order (didn't choose 2893 option but I mentioned it in the comments) - Lucius contacted me asking me which I wanted. He corrected my error and sent my order out immediately. This case is beautiful and very well finished. can't wait to get it all together. Looking forward to a case adapter for the 36mm case (hint hint wink wink) for either a 2824 or 2893

You hand written notes and follow up emails where nice touch

Jim C. (Ross, US)
Gorgeous finish on the case

Can't wait to get a GMT rolling!