Seiko-Dweller 36mm [ULTRA THIN EDITION / TITANIUM] - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

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Seiko-Dweller 36mm — Ultra Thin Titanium Watch Case

Name: Seiko-Dweller 36mm — Ultra Thin Titanium Watch Case
Brand: Lucius Atelier
SKU: SD36TiUT
Price: 378.0 SGD
Availability: InStock

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$378 SGD

The Fluted Sports Classic. Reborn Ultra Thin. Built in Titanium.

The Seiko-Dweller 36mm, part of our Ultra Thin Edition series, is our own take on the fluted sports-watch silhouette — a shape you'll recognise instantly, rebuilt from the ground up in Grade 4 titanium and engineered to a profile most titanium cases can't reach.

This is the first and only ultra thin titanium Seiko-Dweller case on the market — 10.0mm thick with the solid caseback, and around 70 grams on the wrist with the full integrated bracelet fitted. Titanium is why people choose titanium: lighter than steel, harder than steel, naturally corrosion-resistant. This case delivers all three, with nothing left on the table.

Case, crown, caseback and the integrated bracelet are all Grade 4 titanium. The sapphire crystal ships pre-installed. It arrives as a complete case — you add the dial, hands, chapter ring and movement, and you have a finished watch.

Ships as a complete case — crown, bracelet, sapphire and caseback included.
Unlike a bare case build, there's no crown to source, no bracelet to match, no crystal to press. The integrated titanium bracelet comes pre-installed and aligned at our workshop. A modern classic, ready for your dial.

Featherlight by design.
Around 70 grams on the wrist with the full integrated bracelet — and lighter still once it's sized to your wrist and links are removed. Titanium is supposed to feel light; this case actually does.

Genuinely thin.
10.0mm total with the solid caseback. The engineering behind that number: a standard NH movement is 7.59mm tall on its own — which leaves barely 2.4mm for the crystal, caseback floor, walls and hand clearance combined. One of the thinnest cases in our Ultra Thin line.

Titanium, properly.
Grade 4 titanium throughout — case, crown, caseback, bracelet. Harder than 316L steel, so it resists scratches and dents better; naturally corrosion-resistant; and carrying titanium's distinctive subtle grey tone that sets it apart from steel at a glance.

The integrated bracelet.
Over 110 individual parts, each link blending polished and brushed finishes for fluid articulation and light play. It's an extreme component to craft — which is why it ships pre-installed and pre-aligned, not loose in the box.

Heads up — sold separately

Chapter ring. This case requires a SKX013-spec chapter ring to seat the dial correctly — without it, the dial sits too low and hands won't clear. The case fits both normal and ultra thin chapter rings; the choice depends on your dial, not the case. If your dial has applied (raised) indices, choose ultra thin for clearance. If flat-printed, either works. When in doubt, ultra thin is the safer default. Browse compatible chapter rings .

Everything else — crown, caseback, integrated bracelet and sapphire crystal — is included with this case. You only need a dial, hands, chapter ring and movement to complete the watch.

For experienced modders only — TYPE M movements only

This case fits TYPE M versions of NH35, NH36, NH38, NH70, NH71, NH72 only. TYPE L will NOT fit. Due to tight clearance between hands and sapphire, this case is recommended only for professional watchmakers and experienced modders.

Integrated bracelet. The integrated bracelet requires a more precise installation process than a standard bracelet, so each case ships with the bracelet pre-installed and aligned. If you remove and refit it, work with care and patience — it takes a steady hand.

Bracelet screws. Screws are not tightened prior to shipment. Ensure all screws are properly secured before wear — we recommend a suitable threadlocker (e.g. Loctite) during final assembly.

Specs
Build Guide
What's Included
How To Mod

Dimensions
1. Case Diameter 36mm
2. Case Thickness 10.0mm (Solid Caseback)
3. Lug to Lug 43.8mm
4. Lug Width 9mm
5. Weight ~70g with full integrated bracelet
Materials & Finish
1. Quality Swiss Production Quality, ISO 9001 Certified
2. Material Grade 4 Titanium — case, crown, caseback, bracelet
3. Bracelet Integrated, tapers to 16mm; butterfly deployment clasp and bracelet screws in 316L stainless steel
4. Bezel Mirror-polished fluted
5. Crown 7mm coin-edge, screw-down
6. Crystal Flat sapphire with clear anti-reflective coating
7. Crystal Size 29.5mm x 1mm
Compatibility
1. Movements TYPE M: NH35, NH36, NH38, NH70, NH71, NH72
2. Dials 28.5mm
3. Chapter Rings SKX013-spec (required, sold separately)
4. Hands NH movement compatible
Water Resistance
1. Solid Caseback 100m / 10 ATM
New to Seiko modding? Here's everything you'll need for a complete, functioning watch — in the order you'd actually assemble it.

What's already in this purchase:

The titanium case body, the 7mm titanium coin-edge crown, the solid titanium caseback, the integrated titanium bracelet (pre-installed), and the pre-installed sapphire crystal. That's a near-complete watch — you only need to add what goes on the dial side.

The 4 parts you'll need for a complete watch:
1. Chapter ring — required first. The chapter ring seats the dial at the correct height; without it, the dial sits too low and the hands won't clear.
  (SKX013-spec — sold on a separate page. See the "sold separately" panel above for normal vs ultra thin guidance.)
  Browse compatible chapter rings
2. Dial (28.5mm) — the face of the watch. The biggest aesthetic choice you'll make. Match it to your chosen movement (date / day+date / no-date dial).
3. Hands — paired with your dial. Most modders match lume colour across both hands and dial markers (BGW9 white-blue, C3 green, etc.).
4. Movement — NH35 (date), NH36 (day+date), NH38 (no date), or source your own. The movement is the engine of the watch.
Want it built for you?

Tick the Assemble Watch (+SGD $50) option above on this page and we'll handle the full build in our Singapore workshop — case fitting, movement seating, crown alignment, caseback press and function check.

Heads up: assembled watches require 2–5 business days of workshop time before shipping.

Once your parts arrive, see the How To Mod tab for assembly tutorials.
1. 1x Watch Case Body (Titanium, with pre-installed flat sapphire crystal)
2. 1x Crown — 7mm coin-edge (Titanium)
3. 1x NH Caseback — solid, non-display (Titanium)
4. 1x Integrated Bracelet (Titanium, pre-installed)
All photos of watches with modification parts are for illustration purposes only and are not included with the case purchase.

How light is it, really?

Around 70 grams on the wrist with the full integrated bracelet fitted — and lighter once the bracelet is sized and links are removed for your wrist. That's the practical payoff of Grade 4 titanium over stainless steel.

What comes in the box — do I need to buy a crown or bracelet?

No. The Seiko-Dweller ships as a complete case: titanium case body, 7mm titanium coin-edge crown, solid titanium caseback, integrated titanium bracelet, and a pre-installed sapphire crystal. To finish the watch you only need a dial, hands, chapter ring and movement.

Why is the bracelet pre-installed?

The integrated bracelet requires a more precise installation process than a standard bracelet. Shipping it pre-installed and pre-aligned guarantees the fit and finish are correct. You can remove and refit it, but it takes a steady hand — and remember the bracelet screws ship untightened, so secure them (ideally with threadlocker) before wear.

What's the difference between Type M and Type L?

Type M and Type L are Seiko's two factory hand-fitting versions of the NH series. Type L sits higher than Type M — about 0.4mm taller from base to second-hand pinion. Because of the tight clearance between hands and sapphire in Ultra Thin Edition cases, only Type M will fit. Confirm your movement type before ordering.

Do I need to remove the sapphire crystal to install the chapter ring?

No — and that's the whole point of us pre-installing the sapphire for you. The chapter ring sits on top of the dial inside the case, not under the crystal, so the crystal stays where it is throughout the build. (If you ever do need to remove the sapphire — for example, to replace it — that's a workshop job we handle for you, not an at-home step.)

Should I choose the normal or the ultra thin chapter ring?

The choice depends on your dial, not the case — both sizes fit every Ultra Thin Edition case. If your dial has applied (raised) indices, the ultra thin chapter ring is the better choice because its slimmer profile gives the indices clearance instead of resting on top of them. If your dial is flat-printed (no applied markers), either size works. When in doubt, the ultra thin chapter ring is the safer default because it works with both dial types.

What is an SKX013 chapter ring and why does it matter?

A specific size and spec used by Seiko in the SKX013 (discontinued 2019). The LA smaller-case lineup all uses this same spec, which means dozens of chapter ring designs work across every smaller case in the catalogue.

Will SKX007 dials fit?

Any 28.5mm dial will fit. Stock SKX007 dials may seat differently because the original SKX007 has a 4 o'clock crown position with offset dial feet, while Ultra Thin Edition cases are designed for 3 o'clock dial feet.

Does this case need a chapter ring?

Yes — every Ultra Thin Edition case requires an SKX013-spec chapter ring, sold separately. The chapter ring seats the dial at the correct height; without it, the dial drops and the hands will not clear properly.