National Geographic NG712 SERIES User manual

WATCH
COLLECTION
NG712 SERIES
INSTRUCTION
MANUAL

Minute handButton A
Normal crown
position
2nd click position
Calendar
Second hand
or 1/20 sec chronograph hand
Chronograph
hour hand
Chronograph
second hand
Hour hand
Chronograph
minute hand
1st click position
Button B
A) SETTING THE TIME
- Unscrew and pull the crown out to the second position so that the
second hand stops at "0" position.
- Turn the crown to set the hour and minute hands.
- When the crown is pushed back to the normal position, the small
second hand begins to run.
- Screw down crown when finished.
B) SETTING THE DATE
- Unscrew and pull the crown out to the first position.
- Turn the crown counterclockwise to set the date. If the date is set
between 9:00 p.m. and 1:00 a.m., the date may not change the following
day.
- After the date has been set, push the crown back to the normal position
and screw down.
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C) USING THE CHRONOGRAPH
The chronograph is able to measure and display time in 1/20th of a second
up to a maximum of 12 hours. The retrograde chronograph second hand*
runs continuously for 60 seconds after starting, and then stops at the "0"
position.
- Press button "B" to change the watch to chronograph mode. The second
hand stops at the "0" second position, and the chronograph 1/20 second
hand is engaged.
- The chronograph can be started and stopped each time button "A" is
pressed.
- The chronograph 1/20 second hand stops at the "0" second position 60
seconds after starting. When button "A" is pressed to stop the
chronograph, the chronograph 1/20 second hand advances rapidly to
display the measured time.
- Pressing button "B" resets the chronograph, and all hands return to their
"0" positions.
* Although the retrograde chronograph shows movement while measuring
time, the actual measurements will be shown when the "stop" button is
pushed.
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D) CHRONOGRAPH RESET
This procedure should be performed when the chronograph second hand
does not return to the "0" position after the chronograph has been reset.
This should also be performed after the battery has been replaced.
- Unscrew the crown and pull it out to the second position.
- Press button "A" to set the chronograph second hand to the "0" position.
- Press button "B" to set the chronograph 1/20 second hand to the "0"
position.
- The chronograph hands can be advanced rapidly by continuously
pressing buttons "A" or "B."
- Once the hands have been zeroed, reset the time and return the crown to
its normal position and screw down.
- Press button "B" to check that the chronograph hands are reset to the "0"
position.
* Do not return the crown to the normal position while the chronograph
second hand and 1/20 chronograph second hand are returning to the "0"
position. Each hand will stop as soon as the crown is returned to the
normal position, and this position will be recognized as the "0" position.
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WATCH SPECIFICATIONS
Movement caliber: OS62 Diameter: 30.80 mm Height: 4.13 mm
Battery: Silver oxide SR927W or equivalent
Battery life: Approximately two years, assuming 60 minutes chronograph
operation a day
Chronograph: 1/20 second basis, up to 11 hours, 59 minutes, and 59
seconds. 1/20 second retrograde demo: 60 seconds
- Power cell-saving reset mechanism
- Overloading compensation device
- Digital frequency control for time adjustment
Water-resistance: 20 ATM, 200 m
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