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Deal.ai › Seiko
Seiko
Custom Seiko JB Silver Racing Automatic Mod Watch
Seiko

Custom Seiko JB Silver Racing Automatic Mod Watch

Best price now

$349.95at Speed ModsChecked Nov 9

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Price facts

  • Last seen at $349.95 at Speed Mods on Nov 9.

Our take on the Custom Seiko JB Silver Racing Automatic Mod Watch

This is a custom-built watch using a Seiko NH35 automatic movement inside a 40 mm stainless steel case. It pairs a black dial with green luminous markers, sapphire crystal and a Milanese mesh bracelet. It suits buyers who want a vintage dive look with mechanical reliability, but as a mod it lacks Seiko's original warranty and factory finish. Compared with stock Seiko divers, it offers sapphire and a mesh bracelet at a lower cost, though resale value and water resistance are typically weaker.

Best forBuyers new to mechanical watchesFans of vintage dive styleEveryday wear with casual or formal outfitsPeople who prefer bracelets over straps
Pros
  • Reliable Seiko NH35 automatic movement with hacking and manual winding
  • Sapphire crystal resists scratches better than mineral glass
  • 40 mm case fits most wrists comfortably
  • Milanese mesh bracelet adds a dressy, vintage look
  • Green lume markers stand out and aid legibility
Cons
  • Custom build means no Seiko factory warranty
  • Water resistance is likely limited; not a true dive watch
  • Mod quality depends on the builder, so fit and finish vary
  • Resale value is lower than a stock Seiko
  • Lume may be less bright than factory Seiko divers

Custom Seiko JB Silver Racing Automatic Mod Watch prices at every store

  • Speed ModsNew

    In stockShips from Netherlands · duties may apply

    $349.95Checked Nov 9
    Visit Speed Mods

About the Custom Seiko JB Silver Racing Automatic Mod Watch

This is a custom automatic dive-style watch with a deep black dial and green luminous hour markers. The markers glow green in low light. The case is stainless steel, and the watch has a woven stainless steel Milanese mesh bracelet.

It uses a Japanese NH35 automatic movement. The movement winds itself from the motion of your wrist and can also be wound by hand. It needs no battery.

The crystal is sapphire and resists everyday scratches. The case measures 40 mm, and the watch is rated to 300 m water resistance.

Movement
Japanese NH35 automatic, self-winding with manual winding, no battery
Case
Stainless steel, 40 mm
Crystal
Sapphire, scratch-resistant
Dial
Black with green luminous hour markers
Bracelet
Stainless steel Milanese mesh
Lug width
20 mm
Lug-to-lug
47.5 mm
Water resistance
300 m

Questions and answers

Is this a real Seiko watch?
It uses a genuine Seiko NH35 movement, but the watch is assembled by a third-party modder. Seiko does not make or warranty this specific configuration.
Can I swim with it?
The listing does not state water resistance. Treat it as splash-resistant at most unless a builder confirms a rating.
How accurate is the NH35 movement?
Seiko rates the NH35 at roughly -20 to +40 seconds per day. Real-world examples often run closer, but expect some variation.
What is the case size?
The case is 40 mm in diameter, a versatile size that suits most wrists.
Does it need a battery?
No. The NH35 is a self-winding automatic movement powered by wrist motion, with manual winding as a backup.
Where is the Custom Seiko JB Silver Racing Automatic Mod Watch cheapest?
At Speed Mods, for $349.95, as of our latest check.

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