YOUR TIME. YOUR RULES.Your personal custom build
Enquire about your watch

A1MODS / COLLECTIONS

Dayjust Mods

A round case, clear hour markers and a choice of dial colours: Dayjust mods combine a classic shape with your personal colour selection.

6 variants · Free shipping within Germany

How to choose your Dayjust mod

Start with the dial colour and the combination of case and bracelet. Silver has a different feel from two-tone or rose gold. Each variant lists its exact materials and dimensions.

Our product pages show each variant with its own photos and specifications. Standard models are delivered within Germany within 5 working days of receipt of payment.

Help with watch sizing

Your own combination

Want a different combination of colours or components? We discuss what is possible and agree on price and timing before you place your order.

Plan a custom build

A1mods is an independent custom watch project and is not affiliated with Seiko Watch Corporation.