SKX013 Submariner Watch Case - 36mm (DLC BLACK EDITION) [NH34-Ready]

New to Seiko modding? You can build the whole watch right here — every part is an Add dropdown on this page. The case ships as a bare body (with the bezel click spring and the crystal & caseback gaskets); you choose the rest and spec it exactly how you like.

Ten parts make a complete watch. You've got the case — here are the other nine, each a dropdown above, in the order you'd assemble them:

1. Bezel — the rotating dive bezel. Browse SKX013 bezels .
2. Bezel insert — the marked ring that sits inside the bezel. Browse inserts .
3. Caseback — seals the case; solid, or sapphire to show off a decorated movement. Browse SKX013 parts .
4. Chapter ring (required — seats the dial) — SKX013-spec; without it the dial sits too low and the hands won't clear. Browse chapter rings .
5. Crown (required) — screw-down, SKX-style. We suggest a 7mm big crown on this case for a better grip. Browse SKX013 crowns .
6. Crystal — flat sapphire, pressed into the case. Browse SKX013 crystals .
7. Dial (28.5mm) — match it to your movement: date, day+date, or no-date. Browse dials .
8. Hands — paired to your dial; most modders match lume colour across hands and markers. Browse hands .
9. Movement — NH35 (date), NH36 (day+date), NH38 (no date), or fit your own. Browse NH movements .

Building an NH34 GMT? Add a GMT 24H hand (its own dropdown) and a GMT / NH34-specific dial — the 24-hour hand is the one optional extra on top of the ten.

Optional extras (also dropdowns above): a 20mm bracelet or leather strap , and a Côtes de Genève decorated bridge + rotor — only visible through a sapphire caseback, and our bridges pair only with our rotors, so pick them together.

Want it built for you?

Under ADD, tick Assemble Watch (+SGD $100) and we'll do the full build in our Singapore workshop — crystal press, bezel and insert fit, movement seating, crown alignment, caseback press, and a final function check.

Heads up: assembled watches need 2–5 business days of workshop time before they ship.

Prefer to build it yourself? See the How To Mod tab for step-by-step tutorials.

1. 1x Watch Case Body
2. 1x Bezel Click Spring
3. 1x Crystal Gasket
4. 1x Caseback Gasket

Springbars are included with our bracelets and straps.

All photos of watches with modification parts are for illustration purposes only and are not included with the case purchase.

1. A Complete Guide On How To Mod Your SEIKO Watch Dial And Hands (Photos & Video)
2. Fitting dials with four dial legs
3. Seiko Modding: The Complete Build Guide (2026)