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GS Watch Case - 36mm

Caseback (Fits Movement Types)


Version 2 is available here.

Important Note: In order for bracelet to be universally compatible with our oyster bracelet, final GS case will NOT have drilled through lug holes. The blue protector film on the crown is removable. Photos will be updated after the new year. Thank you.

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.


The First and Exceedingly High Quality GS Case designed after Limited Edition Grand Seiko SLGH003!

Comes complete with double domed clear AR sapphire, caseback (solid or sapphire), screw down crown with optional solid brushed oyster bracelet.

Designed to fit all of our dials (28.5mm) and original NH movements (grey dial holding spacer). Additionally, case has ability to fit ETA2824/SW200/SW260 and ETA2893/SW330 movements. Special spacer and caseback provided.

The bracelet clasp is also designed to have micro-adjustment without the need for removing or adding links.

Watch case has a water resistant of 200m.

This watch case is 36mm.
For 39mm, visit here
    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Case Material 316L Stainless Steel
    3. Case Diameter 36mm
    4. Case Thickness 12.8mm
    5. Bracelet Width 20mm taper to 18mm
    6. Lug to Lug 43mm
    7. Lug Width 20mm
    8. Crown Screw down
    9. Crystal Double Domed Sapphire with Clear Anti-Reflective Coating
    10. Crystal Size 29.5mm x 1.5mm x 3mm
    11. Water Resistant 200m / 20atm
    12. 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 32 reviews
Chris Denzler (Duluth, US)
Using this mod part for: GS Case
GS case


Rich (Middleboro, US)
Using this mod part for: Custom build
Beautiful case

The case is exactly what I was looking for. Shipping was incredibly fast. I will do business with LA again

Andrew Stafford (Saint-Lambert, CA)
What a beauty!

Great quality case, well packed and fast shipping. Top notch and would highly recommend.

Anson (Santiago de Cali, CO)
36mm v2

Very nice and easy to work with. I would love to get another!

Sayan (Aachen, DE)
Using this mod part for: GS 36mm build
Beautiful Finishing

The case is masterfully done. One of the best 36mm aftermarket dress watch case out there, in my opinion. A special thanks for the great customer service. I will buy again for sure! #MyFirstBuild

Ian D. (Elk Grove, US)
Using this mod part for: 36mm GS style case V2
Fit and finish are great, better bracelet fitment

The case is great all around, good transitions in finishing, and the improvement on the lug holes for the fitted bracelet fixes the complaints I had with the V1.

My only issue is with the eta2824/sw200 movement adapter, I wish they would provide movement holder screws along with it to mount with your movement. When transferring the eta/sw over to the provided adapter, the screws that sandwich the movement to its original holder would not fit the adapter due to lack of **** head diameter clearance to the inner sidewall of the movement holder. This could be an issue for some without proper tools or confidence in altering parts.

Karl Sitch (London, GB)
Using this mod part for: GS aftermarket
Amazing quality

The brushing on this case is top notch, best aftermarket case I've ever bought. All parts from this build apart from the dial were from Lucius Atelier and I couldn't be happier with all of them.

Elvin T (Austin, US)
Using this mod part for: NH38 Build
Excellent Quality Case

I really like the quality on this case (brushing/polishing/shape).
Installing the chapter ring/movement was easy because I just had to put the chapter ring on top of the dial before placing the case on the movement.

J. (Milpitas, US)
Beautiful case, but with one caveat

The fit and finish is very good; I could nitpick a tiny bit about the finishing in places nobody would ever see, but the finishing is perfect where it counts.

However, I did run into an issue where the Lucius Ateiler SKX013 chapter ring (mirror polished finish) that I had ordered alongside this case would not fit. It was slightly too big to slot in. I measured the chapter ring, and my calipers produced the expected 28.5mm outer diameter figure, so I'm assuming the case was milled a little too tight on the tolerances here-- and I'm guessing by just

Z. (Kampong Pasir Ris, SG)
Probably the best non-Explorer style 36mm case (3.5/5)

I was very lucky to get one of the last GS36 V1 cases.

- Looks really nice, I especially like the sharp, angular edges on the lugs that I feel are missing from V2
- Relatively simple mod, mostly just plug-and-play

- Has the tightest screwdown crown I've ever had - any deviation from 'perfect' alignment of crown stem and case will result in the crown being nigh impossible to use with bare fingers - a tiny application of Silicon Grease (for gaskets) alleviated the issue, but crown is still extremely tight. Most aftermarket crowns have no such issue, I really hope V2 has addressed this issue.
- Did not come with springbars
- AR coating could've been better - it's still very reflective and I feel a simpler flat or inner-domed crystal may have alleviated the issue.

- Aesthetically I prefer this over the Explorer case and the GS36V2, because it offers something more 'unique'
- Design would be perfect with perhaps a better crown with more 'wiggle room' like most aftermarket crowns, and perhaps being 'taller' larger fingers could grip it.