Polar Electro F4TM User manual

GEBRAUCHSANLEITUNG
USER MANUAL
MANUEL D’UTILISATION
MANUALE D’USO
GEBRUIKSAANWIJZING
Manufactured by
Polar Electro Oy
Professorintie 5
FIN-90440 KEMPELE
Tel [phone]
Fax [phone]
www.polar.fi
17925928.00 DEU/ENG/FRA/ITA/NLD A
Polar F4™
Fitness Herzfrequenz-Messgerät
Fitness Heart Rate Monitor
Cardiofréquencemètre
Cardiofrequenzimetro per il Fitness
Fitness Hartslagmeter

30 ENGLISH
Congratulations on your purchase of a new Polar F4™ Fitness Heart Rate Monitor!
The Polar F4 heart rate monitor is easy to use and an ideal
training buddy for many reasons.
• It shows you the date, exercise duration, time spent in
target heart rate zone, your average and maximum
heart rates and your calorie expenditure after each
exercise session.
• It reminds you to exercise at least every three days.
• It has an easy to use, two-button functionality.
• It has a large easy to read display.
Why should you use a heart rate monitor?
• A heart rate monitor helps you to train at your ideal
pace.
• A heart rate monitor maximizes the benefits of
exercise in a limited amount of time.
• A heart rate monitor provides you with objective
information. Are you on the right track with your
training? Are you improving?
• Aheartratemonitorprovidesyouwithimmediatefeedback;
this is why it is an ideal training partner for you!
The Polar F4 heart rate monitor provides you a reliable and convenient way to measure your heart rate wirelessly.
It measures the electrocardiogram (ECG). You can use the wrist unit to conveniently view your heart rate and other
information while walking, cycling, cross-country skiing, or performing any other exercise without disturbing your exercise
rhythm. Professional athletes and amateurs alike have relied on the information provided by their Polar heart rate monitor
for decades, so why shouldn’t you?
Read on to find out how to get the most out of your new training buddy!

Press OK
1. SETTINGS
2. TIME MODE?
Select 12h or 24h time mode with SET
Press OK
Press OK
If you chose 12h time mode select AM or PM with SET
Press OK
3. TIME OF DAY
Select the hours with SET
Press OK
Select the minutes with SET
Press OK
4. SET DATE
Select MONTH/DATE with SET
Press OK
Select DATE/MONTH with SET
Press OK
Select YEAR with SET
Press OK
5. UNIT
Select POUNDS (lb/ft)/ KILOGRAMS (kg/cm) with SET
Press OK
6. USER SETTINGS
Select your WEIGHT with SET
Press OK
Select your HEIGHT with SET
Press OK
Select your AGE with SET
Press OK
Select FEMALE/MALE with SET
7. SETTINGS OK
You have now completed the Basic Settings and
the unit is ready to be taken into use.
SET
OK
POLAR F4 QUICK GUIDE
Switch the unit on by pressing any of the
buttons. Press OK to start the Basic Settings
(SETTINGS is displayed). Enter the Basic
Settings information (time mode, time of day,
date, units for weight and height, your
weight, height, age, and gender). Adjust the
values with the SET button and accept your
selection with the OK button.
For further
information, see chapter 2. Basic Settings,
page 37.

32 ENGLISH
CONTENTS
1. INTRODUCTION TO THE F4 HEART RATE MONITOR ... 33
1.1 F4 PRODUCT SET ............................................ 33
1.2 WRIST UNIT BUTTONS AND SYMBOLS ............. 34
1.3 FUNCTIONS..................................................... 36
2. BASIC SETTINGS ...................................................... 37
3. EXERCISING ............................................................ 38
3.1 HOW TO PUT YOUR TRANSMITTER ON AND
START RECORDING YOUR EXERCISE DATA ...... 38
3.2 FUNCTIONS DURING EXERCISE....................... 39
3.3 HOW TO STOP AND REVIEW THE EXERCISE
SUMMARY ...................................................... 40
4. CHECKING SAVED EXERCISE INFORMATION ............ 41
4.1 SUMMARY FILE ............................................... 41
4.2 TOTALS FILE.................................................... 41
5. HOW TO CHANGE SETTINGS ..................................... 43
5.1 HEART RATE LIMITS SETTINGS ........................ 43
5.2 SOUND SETTING ............................................. 44
5.3 WATCH SETTINGS............................................ 44
5.4 USER INFORMATION SETTINGS........................ 45
5.5 UNITS SETTING ............................................... 45
5.6 TRANSFERRING SETTINGS FROM YOUR
COMPUTER..................................................... 45
6. TARGET HEART RATE ZONE ...................................... 46
7. CARE AND MAINTENANCE ........................................ 48
8. PRECAUTIONS ......................................................... 49
8.1 INTERFERENCE DURING EXERCISE................. 49
8.2 MINIMIZING POSSIBLE RISKS WHEN
EXERCISING ................................................... 50
9. FREQUENTLY ASKED QUESTIONS ............................. 51
10. TECHNICAL SPECIFICATIONS................................... 52
11. LIMITED POLAR INTERNATIONAL GUARANTEE .......... 53
12. DISCLAIMER ............................................................ 54

33ENGLISH
1. INTRODUCTION TO THE F4 HEART RATE MONITOR
1.1 F4 PRODUCT SET
The Polar F4 heart rate monitor set
consists of the following items: The wrist unit displays your heart rate, calories expended,
and exercise time. You can also wear it as a watch.
Wear the transmitter while exercising. The electrode areas
are on the backof the transmitter. The electrodes detect your
heart rate continuously and transmit it to the wrist unit.
The elastic strap holds the transmitter around your chest.
This user manual contains necessary information on using
your Polar F4 heart rate monitor.
Polar Web Services
Polar Fitness Trainer (www.PolarFitnessTrainer.com)
is a complete web service tailored to support your exercise.
Free registration gives you access to the exercise diary,
tests & calculators, reports and useful articles. Moreover,
you can get latest product tips and support online at
www.polar.fi/fitness.

34 ENGLISH
1.2 WRIST UNIT BUTTONS AND SYMBOLS
OK button
•Starts and stops the heart rate
measurement
•Enters the displayed menu and setting
•Moves back to the main mode in the
Summary and Totals menu
•Accepts the settings
•Switches the alarm and snooze off
Note: By pressing and holding the OK button,
you can return to the Time of Day display from
any menu except while you are recording your
exercise.
SET button
•Moves to the following mode or display
•Increases the selected value
•Snoozes the alarm for 10 minutes
By pressing and holding the SET button
•In the Time of Day display the key lock
can be switched ON/OFF
•In the Totals menu an individual value
can be reset
•In the Exercise mode the target zone
alarm can be switched ON/OFF
Heart Touch
In the Exercise mode, you can see the
time of day by bringing the wrist unit
close to the Polar logo on the
transmitter.

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The blinking heart symbol indicates
thatyourheartrate isbeing measured.
The sound symbol indicates that
•the Target Heart Rate Alarm is
on (Exercise mode).
•theAlarmison(TimeofDaymode).
Pressing the SET button snoozes
the alarm for ten minutes. Press
the OK button to stop the alarm.
The fitness bullets indicate the time
you have spent on the target heart
rate zone.
For further information, see
the section Functions during exercise
on page 39.
The watch symbol indicates the time
of day in the Exercise mode.
Your heart rate is displayed as a
percentage of your maximum heart
rate (HR ).
Weekday indicators
MON = Monday, TUE = Tuesday,
WED = Wednesday, THU = Thursday,
FRI = Friday, SAT = Saturday,
SUN = Sunday
The key lock symbol indicates that
the buttons are locked in the Time of
Day display. By pressing and holding
theSETbutton,you canlockthebuttons.
The following text will scroll on the
display: HOLD TO LOCK, LOCKED.
Unlock by pressing and holding the
SET button again. HOLD TO UNLOCK,
UNLOCKED scrolls on the display.
The battery symbol indicates that
the wrist unit battery is low.
For further information, see the
section Care and Maintenance on
page 48.
Automatic exercise reminder text
appears when three days have passed
since yourmostrecentexercise. This
reminder appears every full hour on
the display when the time of day is
displayed.

36 ENGLISH
1.3 FUNCTIONS
SettingsTotalsSummary
Basic Settings
•Whenusingthe
wrist unit for
thefirsttimeor
after resetting
it, press any
button to go to
the Basic
Settingsmode.
•Starting point
for all functions
•Shows date
and time
•Shows the data
recordedduring the
exercise session
(date, duration,
time in target zone,
average heart rate,
maximum heart
rate and calorie
expenditure)
•Accumulates time,
calories, exercise
countsandaverage
exercise frequency
per week
•Target heart rate
limits settings
•Sound setting
•Watch settings:
alarm, time, date
•User settings:
weight,height,age,
gender
•Unitsetting:lb/ft or
kg/cm
Exercise
SET SET SET
OK
SET
•Measures and
records exercise
information
•Shows exercise
information during
theexercise session
•ExerciseSummaryis
automatically
shown after
stopping the
exercise recording

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2. BASIC SETTINGS
You only need to activate the blank wrist unit once or after
resetting it. Once activated, the wrist unit cannot be
switched off.
It is important that you be precise with the Basic Settings,
especially when setting your weight, height, age and gender,
astheyhaveanimpact on the accuracy of the measuringvalues,
such as the target heart rate limits and calorie expenditure.
Alternatively you can transfer your Basic Settings to the
wrist unit from the PC. For further information, see the
section Transferring Settings From Your Computer on
page 45.
1. Activate the wrist unit by pressing any button.
2. SETTINGS is displayed. Press OK to go to Basic Settings.
3. TIME MODE?: Select12 h or24 h timemodebypressingSET.
PressOK to acceptyour selection. TIME OF DAY isdisplayed.
12 h: the time is displayed from 1 to 12 AM or PM.
•Press SET to select AM or PM. Press OK.
•Press SET to select the HOURS. Press OK.
•Press SET to select the MINUTES. Press OK.
24 h: the time is displayed from 0 to 23 hours. In the date
settingthedayisset first andthen themonth.
•Press SET to select the HOURS. Press OK.
•Press SET to select the MINUTES. Press OK.
4. SET DATE: PressSET toselectthe MONTH orDAY. PressOK.
•Press SET to select the DAY or MONTH. Press OK.
•Press SET to select the YEAR. Press OK.
5. UNITS for weight and height: Press SET to select pounds
and feet (lb/ft) or kilograms and centimeters (kg/cm).
Press OK.
6. WEIGHT: Press SET to select your weight. Press OK.
7. HEIGHT: Press SET to select your height. Press OK.
Note: If you selected lb/ft as your units, you first set feet and then
inches.
8. AGE: Press SET to select your age. Press OK.
9. SEX: Press SET to select FEMALE or MALE. Press OK.
The wrist unit displays SETTINGS OK and goes to the
Time of Day Display after 3 seconds.
If you prefer to change some of your settings after
accepting the Basic Settings, you can do it in Settings
mode. For further information, see the section How to
Change Settings on page 43.

38 ENGLISH
3. EXERCISING
To measure your heart rate, you need to wear the transmitter.
Thewrist unitrecords theexercise information(date, duration,
time spent in target heart rate zone, average heart rate,
maximum heart rate and expended calories) during your
exercise session.
Note: The default settings of the target heart rate limits are calculated
according to your Basic Settings. You can learn more about target heart
rate zones in the section Target Heart Rate Zone on page 46. This
information will help you to exercise at the right level. For further
information on how to set the target heart rate limits, see the section
How to Change Settings on page 43.
3.1 HOW TO PUT YOUR TRANSMITTER ON AND
START RECORDING YOUR EXERCISE DATA
Keep the wrist unit within 3 feet/1 meter of your transmitter.
Check that you are not near other people wearing heart rate
monitors or any source of electromagnetic disturbance. For
furtherinformation oninterference, seethe sectionPrecautions
on page 49.
1. Attach one end of the transmitter
to the elastic strap.
2. Adjust the transmitter’s strap
lengthto fit snuglyand comfortably.
Secure the strap around your chest,
just below the chest muscles, and
buckle the strap to the transmitter.
3. Lift the transmitter off your chest
and moisten the two grooved
electrode areas on the back. Check
that the wet electrode areas are
firmly against your skin and that
the Polar logo is in a central,
upright position.
4. Wear the wrist unit as a watch and
press OK to start recording your
exercisedata. Your heart rate and
the heart symbol appear in a
few seconds.

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3.2 FUNCTIONS DURING EXERCISE
Checking the Time of Day
Bringthe wrist unitnear the Polar logo
on the transmitter. The time of day is
displayedfor threeseconds. Oryou can
press the SET button until you see
the Time of Day display.
limits. These are the limits you can see on the upper row of
the display. If you have not set your age, you can do it in the
Settings mode. For further information on determining your
personal target heart rate limits, see the section Target
Heart Rate Zone on page 46.
The heart symbol in the line moves according to your heart
rate. If there is no heart symbol in the line, your heart rate
is either below or above your limits. An alarm sounds when
you are outside the limits, if the heart rate zone alarm is on.
Checking Exercise Duration, Heart Rate Limits and Calories
Press the SET button to browse the following information:
Fitness bullets
Time of day
Heart rate limits
Providing that you have set your age in the Basic Settings
mode, the unit gives you your personal target heart rate
Accumulated exercise calories (Cal/Kcal)
Heart rate (bpm or (HR ))
If the numbers flash, you are outside your
target heart rate zone.
Heart rate limits
Exercise duration (hh:mm ss)
Turning the Heart Rate Zone Alarm On or Off
Press and hold the SET button until the alarm is turned on or
off. The alarm symbol is displayed when the alarm is on.
Fitness bullets
There are six fitness bullets. Each represents 10 minutes in
the target heart rate zone, equaling one hour in total if all
thebullets appear. Whenyou are in the targetheart rate zone,
the 1st bullet starts to blink. When 10 minutes is up, the next
bullet starts to blink and so on. When you are not in the
target zone, the blinking bullet disappears.

40 ENGLISH
3.3 HOW TO STOP AND REVIEW THE EXERCISE SUMMARY
Note: The following information is only available if you have used the
transmitter belt during your exercise session.
Press the OK button to stop the recording of the exercise
data. The SUMMARY view is automatically displayed. Each
result is displayed for 3 seconds.
The following information is shown in the Exercise Summary.
After the Exercise Summary review, the wrist unit returns to
the Time of Day display. You can skip the Exercise Summary
by pressing OK button and check the information later. For
furtherinformation onchecking savedinformation, seechapter
Checking Saved Exercise Information on page 41.
Note: If your display reads 00, your heart rate is not being received. Bring
the wrist unit up to your chest near the transmitter’s Polar logo. The wrist
unit starts looking for the heart rate signal again. The display refreshes
in about 5 seconds.
Note: Your exercise information is saved in the Summary and Totals files
only if the exercise session has lasted more than one minute.
DURATION Exercise duration (hh:mm ss)
IN ZONE Exercise time in the target
heart rate zone (hh:mm ss)
AVG. HR Average heart rate of the
exercise session (bpm)
MAX HR Maximum heart rate of the
exercise session (bpm)
CALORIES Calories expended during the
exercise session (Cal/Kcal)

41ENGLISH
4. CHECKING SAVED EXERCISE INFORMATION
4.1 SUMMARY FILE
You can review your latest exercise information in the
Summary file.
1. In the Time of Day display, press SET.
SUMMARY is displayed.
2. Press OK to start reviewing the data.
DATE is displayed.
3. Scroll with the SET to see the following exercise
information:
DATE Exercise session date
DURATION Exercise session duration
IN ZONE Exercise time in target zone
AVG. HR Average heart rate of the exercise session
MAX HR Maximum heart rate of the exercise session
CALORIES Calories expended during the exercise session
4. Press OK. SUMMARY is displayed.
You can proceed to the Totals menu by pressing SET
(TOTALS is displayed). For further information on Totals,
see the section Totals File in the next chapter.
Alternatively, return to the Time of Day display by pressing
and holding OK.
4.2 TOTALS FILE
You can review cumulative exercise information in the
Totals file.
1. If you start from the Time of Day display, press SET twice.
TOTALS is displayed.
2. Press OK to start reviewing the data.
TOT. TIME is displayed.
3. Scroll with SET to see the following exercise information:
TOT. TIME Total accumulation of exercise time and
the date the accumulation started.
TOT. KCAL Total calorie expenditure and the date
the accumulation started.
COUNT Total number of all exercise sessions and the
date the accumulation started.
PER WEEK Average frequency of exercise sessions per
week (starting from Monday 00:00.00).
RESET ALL Resets all information in the Totals mode to
zero.

42 ENGLISH
Ifyou wishto resetall theinformation, pressOK.
RESET flashes on the display. Select RESET or NO RESET
with SET.
Confirm your choice with the OK button. RESET ALL is
displayed.
4. Press and hold the OK button until the wrist unit returns
to the Time of Day display.
Press SET twice
Reset
All
Per
Week
Count
Tot.
Kcal
Tot.
Time
Totals
OK
SET SET SET SET
Press and hold OK
Note: You can also reset an individual Total value in the Totals menu.
Press the SET button to review the TOTALS menu and find the value you
want to reset. Press and hold the SET button until the wrist unit asks if
you want to reset the value (RESET?). Continue pressing and holding the
SET button until the value is reset to zero. The accumulation date is set
to the current date.

43ENGLISH
5. HOW TO CHANGE SETTINGS
Inthe Settings menu,you can viewor change theinformation
you have set earlier, such as heart rate limits, your personal
information and watch settings. You can also prepare your
settings and transfer them to your wrist unit from your PC.
For further information, see the section Transferring Settings
from Your Computer on page 45.
1. In the Time of Day display, press SET until SETTINGS is
displayed.
2. Press OK. LIMIT SET is displayed.
3. PressSETtobrowseLIMIT SET, SOUND SET,WATCH SET,
USER SET orUNIT SET.
4. Press OK to enter the desired setting.
Note: You can return to the Time of Day display at any stage by pressing
and holding the OK button.
5.1 HEART RATE LIMITS SETTINGS
These are the heart rate limits that are used during your
exercise session. The wrist unit calculates your personal
target heart rate limits based on your age. You can also set
the target heart rate limits yourself. For further information
on determining your personal target heart rate limits, see
the section Target Heart Rate Zone on page 46.
OK
Unit
Set
User
Set
Watch
Set
Sound
Set
Limit
Set
SettingsTotalsSummary
SET SET SET SET
If you start from the Time of Day
display, repeat steps 1-4.
5. LIMITS is displayed. Press SET to
select heart rate limits as beats
per minute (HR) or as a percentage
of your maximum heart rate
(HR ). Press OK.
6. HIGH LIMIT is displayed. Select
the higher limit value with SET.
Press OK.
7. LOW LIMIT is displayed. Select
the lower limit value with SET.
Press OK.
8. LIMIT SET is displayed. Press SET
to proceed to SOUND SET. Press OK.

44 ENGLISH
5.2 SOUND SETTING
If you start from the Time of Day display, repeat steps 1-4.
5. SOUND SET is displayed. Select sound ON or OFF
with SET. Press OK.
6. Press SET to proceed to Watch Settings. Press OK.
5.3 WATCH SETTINGS
Note: The time and date are presented in two ways. Select the presentation
mode by choosing 12h (date: month, day, year) or 24h (date: day, month,
year) mode.
Alarm Setting
If you start from the Time of Day display, repeat steps 1-4.
5. ALARM is displayed. Select ALARM ON or OFF with SET.
Press OK.
ALARM OFF: Proceed to Time Setting step 6.
ALARM ON (24 h mode): Select the hours with SET.
Press OK. Select the minutes with SET. Press OK to
proceed to Time Setting step 6.
ALARM ON (12 h mode): Select AM or PM with SET.
Press OK. Select the hours for the alarm with SET.
Press OK. Select the minutes with SET. Press OK to
proceed to Time Setting step 6.
Time Setting
If you start from the Time of Day display, repeat steps 1-4.
5. ALARM is displayed. Press OK until TIME is displayed.
6. Select 12 h or 24 h mode with SET. Press OK.
7. Only when 12 h mode is in use: Select AM or PM with SET.
Press OK.
8. Select the hours with SET. Press OK.
9. Select the minutes with SET. Press OK to proceed to
Date Setting step 6.
Date Setting
If you start from the Time of Day display, repeat steps 1-4.
5. ALARM is displayed. Press OK until MONTH or DAY is
displayed.
6. Select MONTH or DAY with SET. Press OK.
7. Select DAY or MONTH with SET. Press OK.
8. Select YEAR with SET. Press OK.
9. Press SET to proceed to User Information Settings.
Press OK.

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5.4 USER INFORMATION SETTINGS
If you start from the Time of Day display, repeat steps 1-4.
5. WEIGHT (LBS/KG) is displayed. Adjust your weight with
SET. Press OK to proceed to height setting.
6. HEIGHT: Adjust your height with SET. Press OK to proceed
to age setting.
Note: If you use lb/ft, you need to set feet first and then inches.
7. AGE: Adjust your age with SET. Press OK to proceed to
gender setting.
8. SEX: Select FEMALE or MALE with SET. Press OK.
9. Press SET to proceed to Unit Setting. Press OK.
5.5 UNIT SETTING
If you start from the Time of Day display, repeat steps 1-4.
5. UNIT is displayed. Select LB/FT or KG/CM with SET.
Press OK.
6. Return to the Time of Day display by pressing and
holding OK.
5.6 TRANSFERRING SETTINGS FROM YOUR COMPUTER
Your Polar F4 heart rate monitor offers you the option of
transferring all the settings easily from your PC to your
wrist unit via Polar UpLink feature.
In order to to be able to use the UpLink feature, you need a
computer with a sound card and dynamic loudspeakers or
headphones.
For further instructions see www.polar.fi/fitness.

46 ENGLISH
6. TARGET HEART RATE ZONE
Your target heart rate zone is a range between
the lower and upper heart rate limits expressed
as percentages of your maximum heart rate
(HRmax) or as beats per minute (bpm). HRmax is
the highest number of heartbeats per minute
during maximum physical exertion. The wrist
unit calculates your HRmax according to your age:
Maximum heart rate = 220–age. For more
accurate measurement of your HRmax visit your
doctor or exercise physiologist for an exercise
stress test.
In exercise, different heart rate zones produce
different results. The heart rate zones that suit
you depend on your goal and your basic physical
condition.
The table below contains target heart rate intensity zones in beats
per minute (bpm) estimated by age in 5-year intervals. Calculate your
own HRmax, write down your own target heart rate zones and select the
ones suitable for your exercise.
20 200 120-140 140-160 160-180
25 195 117-137 137-156 156-176
30 190 114-133 133-152 152-171
35 185 111-130 130-148 148-167
40 180 108-126 126-144 144-162
45 175 105-123 123-140 140-158
50 170 102-119 119-136 136-153
55 165 99-116 116-132 132-149
60 160 96-112 112-128 128-144
65 155 93-109 109-124 124-140
Age HRmax
(220–age) Light Intensity
60-70% of HRmax
Moderate
Intensity
70-80% of HRmax
Hard
Intensity
80-90% of HRmax
Target Heart Rate Intensity Zones

47ENGLISH
When your heart beats at 60-70% of your HRmax (HRmax
%),
you are in the Light Intensity Zone. Whether you have just
started working out or you exercise fairly regularly, much of
yourworkout willbe inthis zone.Fat isthe body’smain source
of energy at this level of intensity; therefore this zone is also
goodfor weight control.This intensity stillfeels fairly easyfor
most people and provides, for example, the following
benefits:
•Helps in weight control
•Improves endurance
•Improves cardiovascular (aerobic) fitness
Push on to 70-80% of your HRmax, and you are in the
Moderate Intensity Zone. This is especially good for people
who are exercising regularly. For most people, this is often
the fastest pace they can maintain and still remain
comfortable and free of pain. Exercising in this zone is
particularly effective for improving cardiovascular fitness.
If you are out of shape, your muscles will use carbohydrates
for fuel when you are exercising in this zone. As you get fitter,
your body starts using a higher and higher percentage of
fat for fuel, thus preserving its limited stores of muscle
carbohydrate. Exercising in the moderate intensity zone
results in some additional benefits:
•Improves cardiovascular fitness
•Improves endurance
•Helps in weight control
•Accustoms your body to exercising at a faster pace
•Helps to increase the speed you can maintain without
building up lactic acid (your anaerobic threshold)
At 80-90% of your HRmax, you have moved into the Hard
Intensity Zone. Exercise in the hard intensity zone definitely
feels "hard". You will find yourself breathing heavily, having
tired muscles and feeling fatigued. This intensity is
recommended occasionally for fit people. Exercising in this
zone is intensive, so it provides some unique benefits.
•Increases muscles’tolerance to lactic acid
•Improves hard, short effort ability
When you exercise in the right intensity zones, it guarantees
your enjoyment in your favourite sports. Alternate between
intensity zones to improve your fitness and get variation in
your exercise. Remember that the lower the intensity the
longer you can comfortably exercise in it. Exercise in higher
intensity for shorter periods.
Note: Polar target heart rate intensity definition is modified from
international exercise science authorities' recommendations in which
light intensity can reach lower than 60% of HR
max
.

48 ENGLISH
7. CARE AND MAINTENANCE
Your Polar heart rate monitor is a high-tech instrument and should
be treated with care. The suggestions below will help you fulfill the
guarantee obligations and enjoy the product for many years to come.
Taking Care of Your Polar Heart Rate Monitor
•Clean the transmitter regularly after use with a mild soap and
water solution. Dry it carefully with a soft towel. Keep the wrist
unit clean and wipe off any moisture. Never use alcohol or any
abrasive material such as steel wool or cleaning chemicals.
•Do not dry the transmitter in any other way than with a towel.
Mishandling may damage the electrodes.
•Never store the transmitter wet. Sweat and moisture can keep
its electrodes wet and the transmitter activated, which
shortens the battery life span.
•Store your heart rate monitor in a cool and dry place. Do not
store it in any kind of non-breathing material, such as a
plastic bag or a sports bag if it is wet.
•Do not bend or stretch the transmitter. This may damage the
electrodes.
•Keep your heart rate monitor out of extreme cold and heat. The
operating temperature is 14 °F to 122 °F/ -10 °C to +50 °C.
•Do not expose the heart rate monitor to direct sunlight for
extended periods, such as by leaving it in a car.
Service
During the two-year guarantee/warranty period we recommend that
you have service done by an authorised Polar Service Center. The
warranty does not cover damage or consequential damage caused
by service not authorised by Polar Electro.
Transmitter Batteries
The estimated average battery life span of the transmitter is
2500 hours of use. If you suspect that the transmitter battery has
run out, contact your authorized Polar Service Center for a
replacement transmitter. Polar recycles used transmitters.
Wrist Unit Batteries
Theestimated averagebattery lifespan ofthe wristunit istwo yearsin
normaluse (including1h/day,7 days a week of exercising). Please note
that excessive use of the alarm signals drain the battery more rapidly.
The battery symbol indicates that the battery should be replaced.
Note:
•If you have set the alarm before the symbol is displayed, the alarm
will still activate until the battery runs out.
If you try to reset the alarm the wrist unit displays Battery Low. You
cannot reset the alarm until the battery is changed.
•In cold conditions the low battery indicator may appear, but the
indicator is deactivated when you return to a normal temperature.
•Do not open the wrist unit yourself. To ensure the water resistance
properties and the use of authorized components, the wrist unit
battery should be replaced by an authorized Polar Service Center
only. At the same time a full periodic check of the Polar heart rate
monitor will be done.