What we make

Every watch we sell is a hand-assembled Seiko mod — a custom timepiece built around a proven Seiko NH35 or NH36 automatic movement and fitted with premium aftermarket parts: cases, dials, hands, bezels, and bracelets sourced from trusted suppliers. These are not replicas or counterfeits. They are original custom builds inspired by iconic watch designs, assembled by hand in our workshop. Each one is regulated and tested before it ships.

Why Seiko mods?

Seiko movements are among the most reliable and serviceable in the world. The mod community has built an incredible ecosystem of parts around them — which means we can create watches that would cost thousands from a luxury brand, for a fraction of the price, without cutting corners on what actually matters: the movement and build quality. We believe great watches shouldn't require a luxury budget.

How we work

When you place an order, we begin assembly within 1–2 business days. Processing and build time is around one week, followed by shipping. We don't hold pre-assembled stock — your watch is built to order. Our customer service team is available Monday–Friday, 9 AM–6 PM, and we respond to every email within 24 hours.

Transparency notice: Auro Custom Watches is an independent custom watchmaker. Our products are custom Seiko modifications. We are not affiliated with, endorsed by, or in partnership with Rolex, Tudor, Omega, or any other luxury watch brand. Product names like "SeiGMT" and "Seitona" refer to our own watch styles, not to any third-party brand.