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...there are irregular speed, distance or heart rate readings?
You may have come within range of strong electromagnetic-signals, which
cause erratic readings. Check your surroundings and move away from the
source of disturbance.
...the speed reading is 00 or there is no speed reading on the
display while cycling?
1. Check the correct position and distance of the speed sensor with the
spoke magnet and the wrist receiver.
2. Check that you have set bike 1 or 2 on.
3. If the 00 reading appears irregularly, this may be due to temporary
electromagnetic interference in your current surroundings.
4. If the 00 reading is constant, you may have exceeded 2500 riding hours
and the battery of the speed sensor needs to be replaced.
5. If you are using the wireless Polar Speed Sensor, check that Power is
turned off in the Options mode.
...the altitude readings are inaccurate?
The influence of a sudden temperature change (i.e., if you go outdoors in
the winter) may cause temporarily inaccurate altitude readings. If the
readings are constantly inaccurate, it may be caused by dirt blocking the air
pressure channels (three openings on the backcover of the receiver). In this
case, send the heart rate monitor to a Polar Service Center.
...the data transfer from receiver to computer was unsuccessful?
1. Check the correct position of the wristwatch receiver with the interface.
2. Check that the surroundings are not too bright. This problem often
occurs near windows.
3. Check that there is no obstruction between the infrared windows of the
interface and the wristwatch receiver.
I 98
J. TECHNICAL
SPECIFICATIONS
Polar heart rate monitor is designed to indicate the level of physiological strain
and intensity in sports and exercise. Polar S720i/S710i also measures altitude
and temperature in cycling. No other use is intended or implied. The altitude
and temperature functions are not designed to be exclusive measuring
equipment in aviation, climbing sports, water sports or their equivalent. Heart
rate is displayed as number of heartbeats per minute (bpm).
Transmitter
Battery type:
Built-in Lithium Cell
Battery life:
Average 2500 hours of use
Operating temperature:
14 F to 122 F/ -10 C to +50 C
Material:
Polyurethane
Waterproof
Elastic Strap
Buckle material:
Polyurethane
Fabric material:
Nylon, polyester and natural rubber including
a small amount of latex
Wrist Receiver
Battery type:
CR 2354
Battery life:
Average 2 years (2h/ day, 7 days/ week)
J 99
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