Automatic - 40mm - steel caseback

Build your own Datejust-style custom watch with the MedoMods Seiko Mod Configurator. Choose your dial, bezel, case finish and bracelet to design a clean, dressy everyday piece — powered by the genuine Seiko NH35 automatic movement.

Discover the MedoMods Seiko Datejust Style Collection – custom built Seiko mods that bring together classic Datejust-inspired design and the reliability of the Seiko NH35 automatic movement.

Every watch in this collection is hand-assembled to order. We use high-quality third-party aftermarket (non-OEM) parts, sapphire crystal and 904L stainless steel cases and bracelets to create a sharp, daily-wear ready Seiko mod.

Choose your perfect Datejust-style Seiko mod:

• Dials: Arabic dial, Roman dial, diamond dial, sunburst, Wimbledon, Green Leaf, White Texture and more

• Sizes: 36 mm, 39 mm and 41 mm case options

• Bracelets: Jubilee, Presidential or Oyster style stainless steel bracelets

• Finishes: Steel, rose gold, two-tone and black or coloured dials

All watches are powered by the Seiko TMI NH35 movement (hacking & hand-winding), regulated and checked before shipping. Each piece is built as a unique custom Seiko mod watch, not a mass-produced factory model.

This collection features Seiko mod watches using OEM Seiko movements and third-party aftermarket parts. These are not original Seiko or Rolex watches. MedoMods is not affiliated with, sponsored by or endorsed by Seiko or Rolex in any way.

If you are looking for a Seiko Datejust style mod, Seiko NH35 mod or a custom Arabic or Roman dial build, this collection is the best place to start.