Operating Instructions - iwc IW3931 Operating Instructions Manual

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This is because the residual gravita­
tional error of the balance influences
the accuracy, depending on the pos ­
ition of the watch. Fortunately, there
is a way to overcome this problem
caused by one of the basic laws of
physics: the balance, the pallets and
the escape wheel are mounted in
a minute cage that rotates around
itself once every minute. In this way,
the effect of the gravitational error is
practically eliminated. To ensure that
this extraordinary watch continues to
perform faultlessly in the future, it is
essential to observe a few important

operating instructions.

D A V I N C I T O U R B I L L O N R É T R O G R A D E C H R O N O G R A P H