Datejust & Day-Date Mods

How it works

  • Choose your watch

    Pick the design and the case size that suits your wrist.

  • Made to order

    Built for you on a genuine Japanese automatic, assembled and inspected before dispatch.

  • Delivered with care

    Free worldwide shipping, backed by a 1-year warranty.

    Reviews from real customers

    • ★★★★★

      “Fantastic watch quality and great design.”

      Connor Beadle · ✓ Verified on Trustpilot

    • ★★★★★

      “The watch was fantastic, great support from the team.”

      Rodney · ✓ Verified on Trustpilot

    • ★★★★★

      “Watches are killa, way better than I expected.”

      Logan Adams · ✓ Verified on Trustpilot

      Our most-loved collection. The Seiko Datejust mod rebuilds the timeless dress-watch silhouette on a dependable Japanese automatic movement: Arabic numerals, Roman dials, two-tone and Wimbledon grey, in 36mm and 39mm.

      Every piece runs an automatic movement beneath a sapphire crystal, is built to order, and ships free worldwide. Independent and quality-led: a genuine Seiko automatic under sapphire, built to hold up to the second look. Not a copy. A choice.

      Guides for this collection

      Frequently asked questions

      Is a Datejust mod a real automatic?

      Yes. Each one runs a genuine Seiko NH35 automatic. It is fully mechanical and self-winding, powered by the motion of your wrist.

      Can I swim or dive with it?

      No. Every Rosevari watch is rated 5 ATM (50m): fine for splashes, rain and everyday wear, but not for swimming, showering or diving. The look is a style tribute, not a dive rating.

      Is this an original watch?

      Yes. Every watch is an original Rosevari build: a genuine Japanese automatic movement in a case and dial style that pays homage to the classics. Every watch is sold openly as a Rosevari custom build, never as the genuine article, and we disclose every part we use.

      How much does it cost and how long does it take?

      Builds start from A$289 and are made to order, with free worldwide shipping.

      Looking for a specific dial? Browse the Arabic dial Datejust builds, our best selling line, or the gold and two-tone range.