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This is the 9R86 Spring Drive Chronograph GMT caliber. It has 416 parts, 50 jewels, 140 points of lubrication and ut… | Watches for men, Automatic watch, Time piece
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Escapement Watch Review: Seiko Grand Seiko Spring Drive Chronograph | Page 3 | WatchTime - USA's No.1 Watch Magazine
![Discussion] Grand Seiko Spring Drive 9R86 - the most innovative movement of the 21st century? : r/Watches Discussion] Grand Seiko Spring Drive 9R86 - the most innovative movement of the 21st century? : r/Watches](https://external-preview.redd.it/erQhxVwyWJgZqs-WTk-QI44ky8YUjl4leF2o3MG8BuM.jpg?auto=webp&s=18ac24c3e8ff10908d076645690d80efe919b55a)
Discussion] Grand Seiko Spring Drive 9R86 - the most innovative movement of the 21st century? : r/Watches
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