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Wondering potential causes of limited power reserve on an automatic movement.
Received a new Chinese NHxx movement for a build that only runs a few hours, have to set it every morning.
Has zero beat error and +- 5 sec/day.
The only thing I could guess is broken or overlubricated mainspring but being new to this hobby I'm looking for experienced opinions.
Easy enough fix for me, just gonna swap the movement and disassemble the one from the watch to learn…
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