Polar M21 Heart Rate Monitor User Manual


 
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BATTERIES
POLAR TRANSMITTER
The estimated average battery life of the Polar Transmitter
is 2500 hours of use. Contact your distributor/ dealer for a
transmitter replacement.
Customer Care Charter for
detailed instructions.
Polar recycles used transmitters.
POLAR WRIST RECEIVER
The estimated average battery life of the Polar wrist
receiver is 1 year in normal use (2h/day, 7 days a week).
Note also that excessive use of the backlight and the alarm
signals will use the battery more rapidly.
Do not open the Polar wrist receiver yourself. To ensure the
water resistance properties and the use of qualified
components, the wrist receiver battery should be replaced
only by an authorized Polar Service Center. At the same
time a full periodic check of the Polar Heart Rate Monitor
will be done.
Customer Care Charter for detailed
instructions.
SERVICE
Should your Polar Heart Rate Monitor need service, see
Customer Care Charter to contact an authorized Polar
Service Center.
Water resistance cannot be guaranteed after
unauthorized service.