Automatic - 41mm - Steel caseback

Build your own Nautilus-style custom watch with the Seiko Mod Configurator by MedoMods. Choose your dial, bezel, case finish and bracelet to create a clean, timeless look that fits your style.

Each configuration is built around a reliable Seiko automatic movement and assembled by hand using high-quality aftermarket components. Every watch is regulated and quality-checked before shipping to ensure consistent performance and a premium feel on the wrist.

What you can customize:
• Dial color and layout
• Bezel style and case finish
• Bracelet or strap options

SPECIFICATIONS (Applies to this collection)

• Case diameter: 41mm (excluding crown)

• Movement: NH35 automatic (hacking & hand-winding)

• Case thickness: approx. 12mm (may vary slightly by variant)

• Crystal: Sapphire, scratch-resistant with anti-reflective coating

• Case material: Stainless steel (material grade may vary by variant)

• Lume: High-visibility lume (variant-specific)

• Crown: Screw-down

• Bracelet: Stainless steel (integrated fit) with secure clasp

• Wrist size: approx. 14.5cm – 22cm+ (adjustable; for extra links, leave a note at checkout)

• Caseback: Exhibition / crystal caseback

• Water resistance: 5 ATM (hand-washing & light swimming; not for diving)

Please note: Watches built with this configurator are custom Seiko mod watches inspired by classic Datejust-style design. They are not original Seiko or Rolex products. MedoMods is not affiliated with, sponsored by or endorsed by Seiko, Rolex or any other watch brand.

Start building your custom watch now and create a piece that feels truly personal.