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Explorer Watch Case - 39mm

Caseback (Fits Movement Types)

ONLY 4 main components are needed to complete a watch.
Watch Case
Bridge & Rotor (optional)
Movement Holder (optional)
Tweezer (optional)


  • For the watch case, select your (1) Case, then (2) Bracelet (optional), and lastly (3) Caseback (To fit different types of movements).
  • For a complete watch, select your (4) Dial, (5) Hands and (6) Movement.
  • To decorate movement, select your (7) Bridge and Rotor (optional).
  • To have watch assembled, select (8) Assemble Watch. Please note that assembling the entire timepiece requires 2 to 5 business days prior to shipping.

Engineered by us and made exclusively for us with quality assurance by ISO 9001 Certified manufacturers.


A classic explorer watch case that withstood the test of time. An excellent choice to finish a build.

This new version 2 explorer case comes complete with clear AR sapphire, caseback, screw down crown and solid brushed oyster bracelet. The bracelet clasp is also designed to have micro-adjustment without the need for removing or adding links. Additionally, explorer watch case has a water resistant of 200m.

Designed to fit all of our dials (28.5mm) and original NH movements (grey dial holding spacer).

New Feature!
Ability to fit ETA2824/SW200/SW260 and ETA2893/SW330 movements. Special spacer and caseback provided.

This watch case is 39mm.
For 39mm DLC Black Edition, visit here
For 36mm, visit here
For 36mm DLC Black Edition, visit here
    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Case Material 316L Stainless Steel
    3. Case Diameter 39mm
    4. Case Thickness 11.5mm (Solid Caseback), 12mm (Sapphire Caseback)
    5. Case Length 46.5mm
    6. Bracelet Width 20mm taper to 18mm
    7. Lug Width 20mm
    8. Caseback Screw down, Sapphire, Mirror Polished
    9. Crown Screw down
    10. Crystal Flat Sapphire with Clear Anti-Reflective Coating
    11. Crystal Size 29.5mm x 1.5mm
    12. Water Resistant 200m / 20atm
    13. Fit Movements NH35, NH36, NH38, ETA2824, ETA2893, SW200, SW260, SW330
    1. 1x Watch Case (Inclusive of sapphire and crown)
    2. 1x Oyster Bracelet (Depends on selection)
    3. 1x NH Caseback (Depends on selection)
    4. 1x ETA2824/SW200/SW260 Movement Spacer (Depends on selection)
    5. 1x ETA2893/SW330 Movement Spacer (Depends on selection)
    6. 1x ETA2824/SW200/SW260 Sapphire Caseback (Depends on selection)
    7. 1x ETA2893/SW330 Sapphire Caseback (Depends on selection)

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

Customer Reviews

Based on 71 reviews
Nolan A. (Harvard, US)
Explorer/Ranger build

Great looking combination. Fits very well on my wrist and looks fantastic!

Harry C. (Hindhead, GB)
Using this mod part for: I’m making a watch from scratch.
Amazing quality

This watch case feels absolutely amazing. It feels sturdy and strong and very comfortable just like my omega. The polishing is amazing.

Nicholas S.C. (Crescent City, US)
Using this mod part for: Full custom Nautical explorer
Superb Quality

I am loving this case and oyster bracelet combo. Quite literally the nicest watch bracelet I have ever touched. I think the 39mm case may be too big(lug-to-lug) for me, so I will be acquiring a 36mm explorer to compare the two before deciding which to build into my new daily companion, the nautical explorer. Whoever reads this, lucius atelier provides an excellent service and experience.

Etienne B. (Montreal, CA)
Great case, beautiful proportions and great quality


Andrew M. (Brisbane, AU)
Using this mod part for: Seiko Samurai with limited edition Blue Lagoon Dial
Explorer 39mm Case

Very nice finish on case - Would like a bigger crown - Finish on inside of case could be better - Overall though top case for a mod...

Eli (Austin, US)
Using this mod part for: Aftermarket case
California Dreaming

My first parts build. The 39mm explorer case turned out perfect for my California dial build. Great fit on my 7" wrist

Stefano S. (Conil de la Frontera, ES)

A well finished case

C. (Jackson, US)
Using this mod part for: Explorer case full build nh38
Solid case second build

I liked the first case so much I built a second. Awesome quality, fast delivery, and movement was dialed I to +1 sec. Just an explorer build.

Awristocrat.ca (Brampton, CA)
Using this mod part for: Scratch build for a client
Top notch quality

Shipping was incredibly quick to Canada. Quality of the case and bracelet are the best you’ll find. Worth the money.

H. (Brisbane, AU)
As good as it gets

This case is perfect. If you are doing a rolex explorer homage, this. is. the. case.