: A highly respected US supplier often used by professionals for high-end or vintage parts.
: The go-to source for Seiko modders in the US, specializing in sapphire crystals and specialized cases.
: A massive US-based distributor stocking everything from movements (Seiko, Bulova, Casio) to tiny screws, stems, and crowns.
: Another reliable US source for batteries, bands, and movement components. 2. Specialized Seiko Modding Stores
: A long-standing Canadian supplier that offers a wide array of movements and comprehensive repair kits.
: Features beautifully crafted, bespoke-design mod parts, including some of the best-regarded dials in the community.