Victorinox SWISS AIR FORCE Manual page 5

SETTING THE DATE & TIME-
Pull-Out Crown (AirBoss Mach 1 & 2)
A. Pull out the crown to position (2).
B. Rotate the crown away from you until the date showing is the
day before the desired setting.
C. Pull out the crown to position (3) and rotate toward you. When
midnight is reached, the date will advance to the desired date.
Continue to turn the crown until the desired time is set. Remember,
the date advances at 12:00 midnight, not 12:00 noon.
D. Push in the crown, returning it to position (1). The date and time
are now set.
To Set Time Alone
Refer to instructions "C".
NOTE: Gently pull on crown to determine if your crown is a
screw-down or pull out.
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