Seiko-Dweller 36mm — Ultra Thin Titanium Watch Case

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.

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.

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.

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.

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.)

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.

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.

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.

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.