Setting Instructions - VACHERON CONSTANTIN MANUAL-WOUND WATCH WITH TOURBILLON, PERPETUAL CALENDAR, EQUATION OF TIME AND POWER-RESERVE INDICATOR Manual De Instrucciones

Displays
In addition to the basic functions (hour and minutes), your watch has
a number of displays:
Tourbillon with indication of the seconds (3):
The seconds hand is placed on the shaft of the tourbillon carriage
which rotates on its own axis every minute to compensate for the
effects of gravity on the sprung balance.
Power reserve hand (4):
This indicates the extent to which the watch has been wound
and therefore the available "autonomy". When the hand is on the
minimum graduation, the spring is almost entirely run down and the
watch may stop or be less accurate.
Perpetual calendar (day of the week hand (5), month hand (6), date
hand (7) and leap year hand (8)):
Permanently displays the day of the week, date, month and the
year's leap-year cycle. This calendar is designed to operate without
adjustment until 28 February 2100, provided of course that the
watch is wound regularly and therefore does not stop.
For information, leap years are years that are divisible by 4, save for
"secular" years which are not divisible by 400. For example 2400
will be a leap year but not 2100 or 2200, which will require manual
correction by a Vacheron Constantin watchmaker.
Equation of time hand (9):
This displays the correction to be given to conventional time to
obtain the real time (sidereal time). This correction fluctuates
between + 14'26" on 11 February and - 16'21" on 3 November. Note
that conventional time and real time coincide at midday on the
following dates: 15 April, 14 June, 1 September and 25 December.
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Sunrise and sunset hands (10 and 11):
These hands display each day the time at which the sun rises and
sets, calculated for the city defined by the client, which may differ
from one watch to the next. The graduations shown on the dial are
unable to take account of the different "summer times" and you
must make the correction yourself in accordance with local summer
time regulations.

Setting instructions

Winding and time setting:
The winding and time-setting crown (I) can be placed in two
positions A and B.
A: Pushed down against the case, winding position.
This is the normal position when the watch is being worn and
guarantees the best water-resistance.
When the power reserve hand (4) is close to the minimum, or
every day at roughly the same time, wind the watch by rotating the
winding and time-setting crown (I). The power reserve hand (4) lets
you monitor how much the watch has been wound.
Do not force the winding mechanism when you feel resistance
increasing.
When the power reserve hand (4) is on the minimum graduation, the
spring is almost entirely unwound and the watch may stop or be less
accurate.
B: Time setting position.
When pulled out to this position, rotation of the winding and time-
setting crown (I) enables the time to be set. Afterwards push the
winding and time-setting crown (I) back to position A to restart the
watch.
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