Why Seiko Runs at A Lower Amplitude

Why do vintage Seiko movements show lower balance amplitude than Swiss watches like the ETA 2824-2? Is something wrong – or is it by design? In this video, we explore one of the most misunderstood concepts in mechanical watchmaking: balance amplitude. You'll learn: ✅ Why Seiko watches are engineered to run at lower amplitudes ✅ Key differences in mainspring strength, escapement geometry, jewel count, and lubrication choices ✅ How Swiss and Seiko priorities led to different design trade-offs ✅ Why 240° amplitude in a Seiko 7S26 might be totally normal ***************************************************************************** ✨✨Watchmaking Courses and Training ✨✨ ➡➡ https://watchrepairtutorials.com/watc... ⬅⬅ ************************************************************************************************** 🚀 Don't Miss Out: Sign up for the "It's About Time" Monthly Newsletter https://watchrepairtutorials.com/news... ************************************************************************************************** Become a Watch Repair Tutorial Patreon to access advanced workshops, ad free video and bonus trainings:   / watchrepairtutorials**********************...   Blog Post:https://watchrepairtutorials.com/why-... DISCLOSURE: I often review or link to products & services I regularly use and think you might find helpful. Wherever possible I use referral links, which means if you click one of the links in this video or description and make a purchase we may receive a small commission or other compensation. I am a big fan of Amazon, and many of my links to products/gear are links to those products on Amazon. I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for me to earn fees by linking to Amazon.com and related sites. MY MICROSCOPE SET-UP ► Amscope SM-4TPZ https://watchrepairtutorials.com/get/... Amazon) ► Barlow Lens https://watchrepairtutorials.com/get/... (Amazon) ► LCD Ring Lite https://watchrepairtutorials.com/get/... (Amazon) ► Hayear Microscope Camera https://watchrepairtutorials.com/get/... (Amazon) ► Camera Adapter https://watchrepairtutorials.com/get/... (Amazon) ** FULL LIST OF TOOLS & SUPPLIES I USE ** https://watchrepairtutorials.com/tool...