MW028 - INSTRUCTION MANUAL 3
2. Care and maintenance
Recommendations
•Like all micro-mechanical precision instruments, your
Hamilton watch should be checked at least once ev-
ery two years. Entrust your watch to an authorized
Hamilton service center or an ocial Hamilton retailer.
•To keep your watch water-resistant, make sure that
its sealing features are tested at every check-up.
•Do not move the crown or press the buttons when
you are in water.
•Rinse o your watch with fresh water after any im-
mersion in seawater.
•Dry your watch with a soft cloth whenever it gets wet.
•Have your watch checked for water-resistance by
an authorized Hamilton service center or an ocial
Hamilton retailer each time the case is opened.
Water-resistance
The water-resistance of your watch is indicated on the
case back.
Metric system and imperial system equivalents of
water-resistance and pressure
Unit of measurement Categories of water-resistance
bar / atm (pressure) 3 5 10 20 100
m * (meters) 30 50 100 200 1000
psi 44 72.5 145 290 1450
ft * (feet) 100 165 330 660 3300
*The values given in feet or meters of immersion in water are equivalent to the
measurement of pressure applied in tests according to the ISO 22810 standard.
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 ocial Hamilton retailer.
Batteries
Watch batteries can last between two and ve years,
depending on the watch type, its size and the amount
of energy used by the various functions. If the seconds
hand starts to move in -second steps, the battery
should be changed.
Replacing the battery
We recommend that you contact an authorized Hamilton
service center or an ocial Hamilton retailer, as they are
equipped with the tools and apparatus required to carry
out the work and the necessary checks in a professional
manner. A worn-out battery should be replaced im-
mediately in order to reduce the risk of leakage and
consequent damage to the movement.
Battery type
Button-type zinc-silver oxide primary battery cell.
Magnetic elds
To prevent malfunctions of your watch avoid coming
into contact with magnetic elds such as those of mag-
nets, loudspeakers, cell phones, refrigerators, etc.
