Seiko Tuna Mod – “7.10 Never Again” Custom Build by Rexx Timepieces
This build documents a custom Seiko Tuna mod created as a one-off piece, combining technical execution with symbolic meaning. Built around a black Tuna-style case and powered by an NH35 automatic movement, this watch reflects Rexx’s disciplined approach to modding and finishing.
Beyond the specifications, this build carries a personal statement. The dial features a laser-engraved “7.10 Never Again” inscription — a direct reference to the October 7 terror attack — transforming the watch from a tool into a wearable memorial.
Build by: Rexx Timepieces
Featured here with independent editorial context.
Key Details of This Seiko Tuna Mod Build
- Case: Seiko Tuna–style stainless steel case, black coated (approx. 47–48mm)
- Movement: Seiko NH35 automatic
- Dial: Red sunburst dial with darkened edges and custom pattern
- Dial Marking: Laser-engraved “7.10 Never Again”
- Hands: Silver arrow-style hands with luminous fill
- Bezel Insert: Resin insert, black/red, 60-minute markings
- Chapter Ring: Black with white 60-minute markers
- Crystal: Sapphire front crystal
- Caseback: Exhibition (transparent)
- Strap: Black rubber strap, 22mm lug width
As with all Rexx builds, the same core principles apply: controlled assembly, meticulous cleaning, proper gasket lubrication, and zero tolerance for dust or cosmetic flaws. These practices were detailed in the previous Rexx build and remain consistent across all custom projects.
Final Thoughts on This Seiko Tuna Mod
This Seiko Tuna mod stands as a clear example of how watch modding can move beyond aesthetics alone. While the technical execution follows Rexx’s established standards, the defining element of this build is its meaning.
By integrating laser engraving directly into the dial, this watch becomes more than a custom diver. It carries memory, intent, and a moment in time — worn on the wrist, not displayed behind glass. This balance between mechanical precision and emotional weight is what gives the build its identity.
