Seiko Mod SKX007 42mm - Build 01

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1,299.00 NIS
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1,299.00 NIS
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1,369.00 NIS
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Round SKX007-Inspired Leather Build

This Rexx workshop build follows the familiar proportions of a round mechanical diver rather than the square-case direction used by the neighboring SKX007 projects. Its 42mm stainless-steel case, genuine leather strap, and gold-tone dial create a more traditional wrist profile while retaining the strong bezel and practical readability associated with the SKX007 design language.

This is an independent custom watch assembled and checked by Rexx Timepieces. It is not a factory Seiko model; the build combines an NH35 automatic movement with a selected set of compatible aftermarket components.

NH35 Mechanical Foundation

The Japanese NH35 automatic movement is a proven basis for custom mechanical watches. It offers straightforward winding and time-setting behavior and is widely understood by watchmakers. This version uses a solid stainless-steel caseback, keeping the rear of the watch simple and closed rather than placing the movement on display.

Classic Shape, Workshop Character

The round 42mm case gives this build a more familiar diver stance than the two square SKX007 projects. Sapphire crystal protects the dial, while the genuine leather strap softens the sport-watch profile and makes the watch easier to pair with everyday clothing. The stated water-resistance rating is 10 ATM; seals should still be checked periodically if the watch is regularly exposed to water.

Verified Specifications

  • Movement: Japanese NH35 automatic
  • Case: 316L stainless steel
  • Case diameter: 42mm, excluding the crown
  • Crystal: Sapphire crystal
  • Caseback: Solid stainless steel
  • Strap: Genuine leather
  • Water resistance: 10 ATM stated rating

Watch the Workshop Build

The project is documented in its own Rexx Timepieces build video, providing hands-on context for the finished watch shown here.

Explore more Seiko mod builds, read Rexx Knowledge and Guides, or start a different direction through Rexx custom watch projects.

Rexx Timepieces is an independent workshop. This custom build is not manufactured, sponsored, or endorsed by Seiko.

Every Rexx watch includes an 18-month limited movement warranty. If the movement has a manufacturing defect during that period, Rexx will repair or replace the movement after inspection.

The warranty does not cover loss, theft, water damage beyond the stated rating, impact damage, misuse, unauthorized servicing, or cosmetic wear from normal use. Keep the matching metal warranty card and order details so the watch can be traced and serviced properly.

Every Rexx watch includes an 18-month limited movement warranty. Each watch also receives a matching metal warranty card tied to its serial number, so the build stays traceable, serviceable, and accountable after it leaves the studio.

Read warranty details