Speedmaster Mods

Our speedmaster-style chronograph seiko mods are motorsport chronograph watches built around a Seiko VK63 meca-quartz chronograph movement (a hybrid, not a full automatic - we always say so), wearing the stepped tachymeter bezel and utilitarian moon-watch legibility. Every one carries a sapphire crystal, a 5 ATM (50m) everyday water rating (splash and rain, not swimming or diving), and a 1-year warranty. Made to order in about 2 to 3 weeks with free worldwide shipping, from A$289. Made to be looked at twice.

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

      The racing chronograph, reimagined. The Seiko Speedmaster mod brings the tri-sub-dial motorsport dial to a dependable quartz chronograph movement and sapphire crystal.

      Built to order with free Australian shipping. Independent and independent. Not a copy. A choice.

      Guides for this collection

      Frequently asked questions

      Is a Speedmaster mod a real watch?

      Yes. Each one runs a Seiko VK63 meca-quartz chronograph movement (a hybrid, not a full automatic - we always say so). The chronograph module is mechanical while a battery keeps the time - we label it meca-quartz, never automatic.

      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, so allow about 2 to 3 weeks before free worldwide shipping.