You would have to invest in a certified chronometer that is either an automatic or manual wind. Those type of watches are COSC-certified (COSC is Contrôle Officiel Suisse des Chronomètres, the Official Swiss Chronometer Testing Institute). There are many brands that send a few of their models through the testing.

My $.02.
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"Its not a matter of being ready as it is being prepared" -- B. E. J. Taylor