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Chronomaster: 4 1/2 sec band over 5 years with new movement; what do I do now that batty is dead?

2K views 13 replies 7 participants last post by  Hans Moleman 
...I see that the Grand Seiko has a mechanical control for rate adjustment. It's not clear to me whether that changes an internal digital value or an analog trimcap, but in any case it is nicely accessible...
The rate adjustment of the Seiko 9F is digital ("changes an internal digital value").
 
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