A SeikoMod is a custom watch built around a Seiko movement/platform with aftermarket parts. The term "MOD" comes from "modification". These modifications are generally made for those who wish to personalize their watch according to their specific tastes or needs. Modifications can vary considerably, from minor aesthetic changes to more complex technical revisions. What makes SeikoMod watches particularly amenable to modification is the wide availability of spare parts. This abundance of components enables a wide range of customization, making each Seiko Mod watch unique.

Our standard processing and assembly time is about one week from the moment your order is confirmed (excluding shipping/transit).

U.S. 3–7 business days; International 6–10 business days (remote areas 10–15). These are estimates, not guarantees.

12-month warranty on movement and assembly from delivery date.

Watch, spare links (if on bracelet), a leather box, link removal tool included.

Yes! We offer free worldwide shipping. Any duties or import taxes will be covered by us.

Unworn, non-custom pieces: 14-day returns from delivery for U.S orders, 7 days for international orders (keep all protective films/packaging). Custom-spec builds: exchanges/adjustments only; restocking may apply.

Orders can be canceled within 24 hours of purchase. After 24 hours, parts are allocated and work begins—cancellation isn’t guaranteed.