RR1403: Difference between revisions
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Latest revision as of 15:17, 23 July 2021
RR1403 is a watch calibre by Ball Watch Company.
It is an automatic mechanical chronograph movement based on the Valjoux 7751. Complications are hours, minutes, subsidiary seconds, linear triple calendar and single-button chronograph with accumulated measurement up to 30 minutes, and power reserve is 48 hours.
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