Care And Maintenance; Recommendations; Water-Resistance; Leather Straps - Hamilton KHAKI FLIGHT TIMER Instruction Manual

2. Care and maintenance

2.1

Recommendations

• Like all micro-mechanical precision instruments, your
Hamilton watch should be checked at least once
every two years. Entrust your watch to an authorized
Hamilton repair center or to any other professional
watch service.
• To keep your watch water-resistant, make sure that
its sealing features are tested at every check-up.
• Do not move the crown when you are in water.
• Rinse off your watch with fresh water after any immer-
sion in seawater.
• Dry your watch whenever it gets wet.
• Have your watch checked for water-resistance by an
authorized Hamilton retailer or by any other profes-
sional watch service each time the case is opened.
2.2

Water-resistance

The water-resistance of your watch is indicated on the
case back.
Water resistance and equivalent pressure used in Anglo-
Saxon countries:
Unit of measure Water resistance categories available
atm (overpressure) 3
psi 44
ft *
100
Water resistance and equivalent pressure used in coun-
tries using metric systems:
Unit of measure Water resistance categories available
bar 3
m * 30
* The values given in feet or meters of immersion in
water are equivalent to the degree of overpressure
applied during the tests according to the ISO 22810
standard.
4
5 10 20 100
72,5 145 290 1450
165 330 660 3300
5 10 20 100
50 100 200 1000
2.3

Leather straps

Hamilton recommends that you follow the steps below
in order to preserve the condition of your leather strap
for as long as possible:
• Avoid contact with water and dampness to prevent
discoloration and deformation.
• Avoid prolonged exposure to sunlight to prevent the
color from fading.
• Do not forget that leather is permeable! Therefore
avoid contact with greasy substances and cosmetic
products.
• If you have a problem with your leather strap, please
contact your nearest Hamilton retailer.
2.4

Batteries

Watch batteries can last between two and five years,
depending on the watch type, its size and the amount
of energy used by the various functions.
Replacing the battery
We recommend that you contact an approved Hamilton
service center or authorised Hamilton retailer, as they
are equipped with the tools and apparatus required to
carry out the work and the necessary checks in a profes-
sional manner. A worn-out battery should be replaced
immediately in order to reduce the risk of leakage and
consequent damage to the movement.
Battery type
Button-type zinc-silver oxide primary battery cell.
2.5

Magnetic fields

To prevent malfunctions of your watch, avoid com-
ing into contact with magnetic fields such as those of
magnets, loudspeakers, cell phones, refrigerators, etc.
© 2011 HAMILTON – INSTRUCTION MANUAL