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Explorer Watch Case - 39mm

Caseback (Fits Movement Types)

ONLY 4 main components are needed to complete a watch.
Watch Case
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 have watch assembled, select (7) 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, 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 11.8mm
    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 Sapphire 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 53 reviews
Juho (Oulu, FI)
Using this mod part for: Explorer case
Absolutely brilliant

Quality and details are decent. Bracelet fitment and solid end links are awesome. Clasps are a bit crafty but not a big problem. 39mm and 36mm

Cedric Simard (Newmarket, CA)
Great case, great guy!

This is a nice case, can't wait to see what else Adriel comes up with. He was quick to answer my questions in helpful manner.

Jens Fredriksson (Stockholm, SE)
Using this mod part for: Aftermarket case
Explorer 39

Great finished case. Beyond expected. Bought with assembly that went incredibly fast and without flaws. Definitely got me interested in buying more quality items from LA.

Sergiu Marius Scafaru (Yongin-si, KR)
Using this mod part for: V2 Explorer Case 39mm
V2 Explorer Case and Mod

This case is exactly as described and pretty nice quality as well. Adriel also did an excellent job putting this mod together. Will definitely keep Lucius Atelier in mind for the future.

Eli Maman (Tel Aviv, IL)

Very happy with this purchase. Arrived very fast. Amazing customer service. Enjoyed the while experience. Definitely recommended. Thank you

t. (Ichinomiya, JP)
good product

thank you for this wonderful case.
I will enjoy a little more improvement.

Victor (Dublin, US)
Can't find anything better for the price

Positive note: The case looks fantastic, the crystal is top quality and there's plenty of space to fit the movement comfortably having the caseback holding it in place.
Negative note: I personally found the rolex style clasp unusual (for a seiko built) and it's little hard to open it over the pressure point. Also, I had to shave 0.5mm off an end link to make it fit - yet is still better than any Strapcode/miltat.

All things considered, this is the best product you can find at this price. 100% worth it

Luke Watson (Columbia, US)
Using this mod part for: Aftermarket case (39mm Explorer)
Great Case!

Love this case. Very well made. Can't wait for more to come in stock. Wears great. NH36 movement fits slightly loose with the standard grey spacer, but not noticeable once fully cases.

Reagan Fitzgerald
Awesome quality

Really good quality case. Polishing and brushing is amazing.

alfredo boullosa (Houston, US)
Using this mod part for: 39mm explorer case
Great quality

I can not say enough good things about their parts but I am already planning more builds the case fits great and the polishing looks fantastic