About Us

Amplitude Watch Parts was created for US-based watch repair enthusiasts and independent watchmakers who are tired of piecing together mainspring compatibility information across hard-to-search watch parts sites, eBay listings, and Google searches.

We built Amplitude to make it easier to quickly find trusted mainsprings for the most popular movements you service — without dealing with no-name unbranded parts, unclear compatibility references, overseas shipping delays, and tariffs.

Our catalog emphasizes:

• market leaders like Generale Ressorts
• OEM parts from vendors like Seiko, where available
• verified compatibility research
• fast US-based shipping

We prioritize trusted, branded mainsprings and avoid unbranded generic aftermarket parts that can create fitment, arbor attachment, and reliability issues during servicing.

If there’s a movement family you’d like us to support, we’d love to hear from you.