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 vague compatibility references, unbranded aftermarket parts, overseas shipping delays, and tariffs.

Our catalog emphasizes:

• trusted manufacturers like Generale Ressorts
• OEM ETA and Seiko parts where available
• verified compatibility research
• fast US-based shipping

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