A1MOD

A Seiko Mod is a custom-built watch based on an original Seiko movement.

The case, dial, hands, and other components are carefully customized to create a unique and personal design.

Each watch is a one-of-a-kind piece, built to the highest quality standards.

No. A1MOD is not affiliated with Seiko in any way.

We use genuine Seiko movements combined with high-quality aftermarket components to craft exclusive custom watches.

We use reliable Seiko automatic and quartz movements such as NH34, NH35, NH36, NH38, NH70, NH72, VK63, VK64, and VK61.

These calibers are globally recognized for their robustness, precision, and longevity.

Our automatic movements typically have a daily variation of ±10–20 seconds, depending on wearing habits and temperature.

Our models are rated 3 ATM, meaning they are splash-resistant and suitable for everyday use, but not for swimming or diving.

On request, we can install reinforced gaskets for improved water resistance (additional charge applies).

We always ensure proper sealing during assembly.

However, because components are replaced, the original factory water resistance cannot be fully guaranteed.

We exclusively use 316L and 904L stainless steel, ceramic bezels, sapphire or Hardlex crystals, and Super-LumiNova (C3 or BGW9) lume for superior quality and durability.

Absolutely! You can choose every detail—from the dial and hands to the case and bracelet.

Simply reach out to us via email or WhatsApp to discuss your custom design.

Yes, we also offer upgrade and tuning services for existing watches.

No problem! Contact us on WhatsApp or Instagram — we’ll build your desired model as a custom piece.

All Amods watches are assembled within the European Union — depending on workload, in Germany, the Netherlands, or Spain.

Each watch is carefully built and inspected by experienced watchmakers.