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28 Forerunner 50 Owner’s Manual
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All of your Forerunner settings are
preserved, except the time of day.
NOTE: Before replacing
the battery, save all
of your workout data
to history or to your
computer.
NOTE: Garmin
recommends that you
take the Forerunner to a
professional watch repair
person to have the battery
replaced.
Heart Rate Monitor Battery
The heart rate monitor contains a
user-replaceable CR2032 battery.
The heart rate monitor battery will
last for three years (typical use is one
hour per day).
To replace the battery:
1. Locate the circular battery
cover on the back of the heart
rate monitor.
2. Use a coin to twist the cover
counter-clockwise so the
arrow on the cover points to
OPEN.