30
Turn the compression key to the “open” position in the direction of the arrow.
Then pull crown A out to position 2. This timepiece features a date display win-
dow at 4 o’clock and a rapid correction system. If you have to move the date one
day forward, turn crown A (in position 2) anti-clockwise. Repeat the operation
until the desired date is displayed. For months with less than 31 days, follow the
same procedure to move on to the 1
st
of the month.
Once the operation is complete, push crown A back into position 1 and turn the
compression key to the “closed” position in the direction of the arrows. NB: date
correction should not be performed between 10.30 p.m. and 3.30 a.m. During
this period the automatic date change mechanism is already in action.
Setting the second time zone
Crown A
Turn the compression key to the “open” position in the direction of the arrow.
Then pull crown A out to position 2.
Turn crown A (in position 2) clockwise. The second time zone hour hand
will make one-hour jumps. This mechanism actuates the day/night indicator at
12 o’clock. Move the hand forward to the desired time, taking into account the
day/night indicator.
Once the operation is complete, push the crown back into position 1. The watch
will start running again. Then turn the compression key to the “closed” position
in the direction of the arrows.
Chronograph operation
The central seconds hand on the Master Compressor Diving Chronograph
GMT Navy SEALs
®
watch displays the chronograph seconds with an eighth-
of-a-second definition. A counter located at 3 o’clock tallies the minutes up to
30 minutes (after 1 revolution it will start counting another 30 minutes). Another
counter at 9 o’clock tallies the hours up to 12 hours (after one revolution it will
start counting another 12 hours).
- Pushpiece at 2 o’clock: this pushpiece starts and stops the chronograph function.
- Pushpiece at 4 o’clock: this pushpiece resets the counters and the central sec-
onds hand. When timing is in progress, pressing this push-piece has no effect.
Each of these 2 push-pieces features a wing-nut with patented compression
system. This enables additional compression of one of the 3 push-piece gaskets,
