Hamilton Khaki Aviation Quartz, Jazzmaster Square Auto, Khaki Air Quartz, Khaki Field Auto, Khaki Tachymiler Instruction Manual
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A U T O M AT I C A N D Q U A R T Z
C h r o n o g r a p h
I N s T R U CT I O N M A N U A l
© HAMILTON 007 / CHrONOg rApH
ETA 251.272
Khaki Aviation Quartz Chrono
22 jewels
ETA 24-2
Jazzmaster Square Auto Chrono
37 jewels
ETA 7753
Jazzmaster Auto Chrono
27 jewels
ETA 7750
Khaki Field Auto Chrono
25 jewels
ETA 7750
Khaki Tachymiler
25 jewels
ETA 251.471
Khaki Air Quartz Chrono
23 jewels
© HAMILTON 007 / CHrONOg rApH
© HAMILTON 007 / CHrONOg rApH
Congratulations
Hamilton is delighted that you have chosen a timepiece from its collection. You have acquired a small
technological marvel that will serve you faithfully
for many years. The most advanced technologies
were used throughout its manufacture and it underwent stringent controls before it was released
for sale.
Characteristics
A Start/Stop button
B Button for resetting to zero
C Crown for adjustments
D Button for setting date
E Crown for adjustment of interior rotating bezel
y 60-second counter
x 30-minute counter
c 12-hour counter
1/10 second counter
Small seconds display
Date / Day
Telemeter or tachometer scale
Interior rotating bezel
Care and maintenance
Recommendations
Like all micro-mechanical precision instruments, your
Hamilton watch should be checked at least once every
two years. Entrust your watch only to an authorized
Hamilton agent. To keep your watch water-resistant,
make sure t hat its sealing features are tested at every
check-up.
The water-resistance of your watch is indicated on the
case back.
Ex: 3 ATM = 30 meters = 100 feet / 5 ATM = 50 meters
= 165 feet / 10 ATM = 100 meters = 330 feet / 20 ATM =
200 meters = 660 feet (page 78)
Five basic rules for maintaining the
water-resistance of your watch
1. Have your watch checked regularly.
2. Do not move the crown when you are in water.
3. Rinse o your watch with fresh water after any
immersion in seawater.
4. Dry your watch whenever it gets wet.
5. Have your watch checked for water-resistance by
an authorized Hamilton agent each time the case
is opened.
Automatic movement. The mechani sm of
the watch includes an o scillating rotor that
winds the mainspring via the motion of your
wrist. Th e power res erve is approximately 42
hours. If necessary, the watch may be rewound
manually. With most of our models, the beauty
of the inner working of the watch movement
can be admired through the transparent case
back.
Quartz movement. The electrical energy pro-
vided by the battery causes the quartz in the
interior of the watch movement to oscillate
32,768 ti mes per secon d. This high frequency
gives great accuracy. The seconds hand advances in steps.
Adjustments
NB: On certa in models the cro wn is screwed down
to guarant ee o ptimal water-res istance. It must be
unscrewed to mak e adjustments. After adjustments
make sure it is screwed down again.
Please no te that water-resi stance is onl y guaranteed
when the crown is screwed down.
Setting the time
1. Pull out the crown C completely to position (p2):
the seconds hand stops*.
2. Set the time by turning the crown in the desired
direction.
3. Push the crown back in completely: the
seconds hand starts again, allowing perfect
synchronization with a time signal.
* stop seconds according to model
Setting the date and the day
1. Pull out the crown C to position (p1).
2. Turn the crown counterclockwise until the desired
date is displayed and clockwise to display the
desired day.
3. Push the crown back in completely.
NB: Avoid per forming this operation between 8 p.m.
and 2 a.m.
Movement ETA 7753
1. Press button D using e.g. the tip of a ballpoint
pen.
2. The date changes at each press.
NB: Adjustment is not possible between 8.30 p.m. and
11.p.m.
Setting the time zone and the
date
1. Pull out the crown to C to position (p1).
2. Turn the crown to advance the hour hand.
The date changes each time the hand passes
12 o’ clock midnight.
3. Push the crown back in completely.
Important: Do n ot leave the crown in position (p1)
for longer than 20 minutes, as this might interfere with
the time function.
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