Diver Watch Case - 42mm - SKX007/Submariner Edition (Fits NH & GMT Movements)

The SKX Diver at 42mm — Seiko NH and Swiss Movements in One Case.

The Diver Watch Case 42mm is our SKX007-spec dive case, engineered to take two very different movements: the full range of Seiko NH calibers, and high-end Swiss movements — the ETA2893 and Sellita SW330. One case body, two build routes.

It keeps the submariner-style crown guard and SKX silhouette modders know, and it fits every one of our SKX007 mod parts — chapter rings and aftermarket parts. The screw-down crown and caseback are unique to this case and come included.

Supplied as a donor case body and rated to 200m, so you choose the bezel, insert, crystal and chapter ring that suit your build.

Two movement families, one case body.
Run a Seiko NH build, or step up to the Swiss ETA2893 or Sellita SW330 — the matching gold movement spacer and caseback come with that selection. Few aftermarket cases take both.

Heads up — sold separately

Bezel, insert & crystal. Selected from the options on this page — pick your rotating (or fixed) bezel, the insert, and your sapphire crystal to suit the build.

Chapter ring. A SKX007-spec chapter ring seats the dial at the correct height. Browse compatible chapter rings .

Dial, hands & movement. The face, hands and engine are chosen separately. Match the dial and hands to your movement (date / day-date / no-date).

Your screw-down crown and caseback are already included — they’re unique to this case and aren’t sold elsewhere.

Casebacks are NOT interchangeable between NH and ETA2893 / SW330

Each caseback is threaded to a different height to match its movement. Fitting an ETA2893 / SW330 caseback onto a case running an NH movement will damage the NH movement. Always match the caseback to your movement.

The ETA2893 and SW330 are expert-level builds. They run a fourth hand and leave roughly 40% less clearance between the hands than an NH caliber, so hand-setting is far less forgiving. Unless you’re a seasoned modder or a certified watchmaker, we’d steer you to the NH route.