SUUNTO Observer - Manual (Page 10)

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1.3 WATER RESISTANCE
Suunto Observer is tested with ISO (International Organization for standardization,
www.iso.ch) standard 2281. This means that the product is water-resistant. In addition to
the term ‘water resistant’, Suunto Observer is marked with an indication of a test
overpressure given as a depth in meters (100 m/330 feet). This indication, however,
does not correspond to a diving depth but refers to the pressure at which the water
overpressure test was conducted.
This means that you cannot dive to a depth of 100 m/330 ft. with your Suunto Observer.
Rain, showering, swimming and other normal exposure to water will not affect its operation
but the buttons shall not be pressed if exposed to water in any circumstances.
NOTE: Suunto Observer wristop computers must not be used for diving.
1.4 BATTERY REPLACEMENT
Suunto Observer operates on a 3-Volt lithium cell, type: CR 2032. The life expectancy
is approximately 12 months in the Time mode.
A low-battery warning indicator is activated on the display when approximately 5–15
percent of the battery capacity is still available. When this occurs, you should replace
the battery. However, extremely cold weather may activate the low battery warning
indicator even though the battery is still fully operational. If the battery warning indica-
tor is activated in temperatures above 10°C (50°F), replace the battery.
NOTE: Heavy use of the backlight, altimeter and compass will significantly reduce
battery life.
You can replace the batteries yourself as long as you do it properly to avoid any leakage
of water into the battery compartment or computer. Always use original battery
replacement kits. (They include a new battery, battery lid and O-ring.) You can purchase
the battery kits from official Suunto retailers.
NOTE: When replacing the battery, also replace the battery lid and O-ring. Never use
the old ones.