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Montblanc

Separate power trains

 

Calibre MB M66.26 is hand wound 488-component movement with separate going trains for the time and chronograph functions.

Time keeping power reserve is about 100 hours and chronograph power reserve is rated on the dial indicator as 45 mins.

But you can extend the chronograph power reserve repeatedly by hand winding its mainspring while the chronograph is running.


Regards,

MTF.

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