6
mitter belt (20m / 66 ft). 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 30m/100ft with your Suunto X3HR
wristop computer or 20m / 66 ft with the transmitter belt.
Rain, shower, swimming and other normal exposure to water will not affect its opera-
tion but the buttons shall not be pressed if exposed to water in any circumstances.
NOTE: X3HR wristop computers and transmitter belts must not be used for diving.
1.4. BATTERY REPLACEMENT
Suunto X3HR 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, compass and heart rate monitor will sig-
nificantly reduce battery life.
You can replace the batteries yourself as long as you do it properly to avoid any leak-
age 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 pur-
chase 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.
NOTE: Change the battery at your own risk. Suunto recommends you to have the
batteries changed in official Suunto services.
