Like any electronic device, the Polar training computer should be treated with care. The suggestions below will help you fulfill guarantee obligations and enjoy this product for many years to come.
Connector: Detach the connector from the strap after every use and dry the connector with a soft towel. Clean the connector with a mild soap and water solution when needed. Never use alcohol or any abrasive material (eg. steel wool or cleaning chemicals).
Strap: Rinse the strap under running water after every use and hang to dry. Clean the strap gently with a mild soap and water solution when needed. Do not use moisturizing soaps, because they can leave residue on the strap. Do not soak, iron, dry clean or bleach the strap. Do not stretch the strap or bend the electrode areas sharply.
Check the label on your strap to see if it is machine washable. Never put the strap or the connector in a dryer!
Training computer and sensors: Keep your training computer and sensors clean. To maintain the water resistance, do not wash the training computer or the sensors with a pressure washer. Clean them with a mild soap and water solution and rinse them with clean water. Do not immerse them in water. Dry them carefully with a soft towel. Never use alcohol or any abrasive material such as steel wool or cleaning chemicals.
Keep your training computer and sensors in a cool and dry place. Do not keep them in a damp environment, in non-breathable material (a plastic bag or a sports bag) nor with conductive material (a wet towel). The training computer and heart rate sensor are water resistant, and can be used in water activities. Other compatible sensors are water resistant, and can be used in rainy weather. Do not expose the training computer to direct sunlight for extended periods, such as by leaving it in a car or mounted on the bike mount.
Avoid hard hits to the training computer and the sensors, as these may damage the sensor units.
Operating temperatures are -10 °C to +50 °C / +14 °F to +122 °F.
During the two-year guarantee/warranty period we recommend that you have service, other than battery replacement, done by an authorized Polar Service Center only. The warranty does not cover damage or consequential damage caused by service not authorized by Polar Electro. For further information, see Limited International Polar Guarantee.
For contact information and all Polar Service Center addresses, visit www.polar.com/support and country-specific websites.
Register your Polar product at http://register.polar.fi/ to ensure we can keep improving our products and services to better meet your needs.
The username for your Polar Account is always your email address. The same username and password are valid for Polar product registration, polarpersonaltrainer.com, Polar discussion forum and newsletter registration.
The RCX3 training computer and the Polar H2/H3 heart rate sensor both have a user changeable battery. To change the battery yourself, please follow the instructions carefully as instructed in chapter Change Batteries Yourself.
The batteries for the speed and cadence sensors cannot be replaced. Polar has designed speed and cadence sensors to be sealed in order to maximise mechanical longevity and reliability. The sensors have long-life batteries inside. To purchase a new sensor contact your authorized Polar Service Center or retailer.
For battery information of the Polar s3+ stride sensor, Polar G5 GPS sensor or Polar G3 GPS sensor W.I.N.D., consult the user manual for the product in question.
Prior to changing the battery, please note the following:
The low battery indicator is displayed when 10-15% of the battery capacity is left.
Before battery change, transfer all data from your RCX3 to polarpersonaltrainer.com to avoid data loss. For more information, see 7. Data Transfer.
Excessive use of the backlight drains the battery more rapidly.
In cold conditions, the low battery indicator may appear, but will disappear when the temperature rises.
The backlight and sound are automatically turned off when the low battery indicator is displayed. Any alarms set prior to the appearance of the low battery indicator will remain active.
Keep the batteries away from children. If swallowed, contact a doctor immediately. Batteries should be disposed of properly according to local regulations.
To change the batteries of the training computer and heart rate sensor yourself, carefully follow the instructions below:
When changing the battery, make sure the sealing ring is not damaged, in which case you should replace it with a new one. You can purchase the sealing ring/battery kits at well-equipped Polar retailers and authorized Polar Services. In the USA and Canada, the additional sealing rings are available at authorized Polar Service Centers. In the USA the sealing ring/battery kits are also available at www.shoppolar.com.
When handling a new, fully charged battery, avoid clasp-like contact, i.e. simultaneously from both sides, with metal or electrically conducting tools, like tweezers. This may short circuit the battery, causing it to discharge more rapidly. Typically, short circuiting does not damage the battery, but it may decrease the capacity and the lifetime of the battery.
Changing Training Computer Battery
Changing Polar H1/H2/H3 Heart Rate Sensor Battery
Changing Polar WearLink+ Heart Rate Sensor Battery
The power save mode is enabled by default.
During the night, in between the hours 24:00 - 06:00 / 12:00am - 06:00am, the training computer display will be switched off automatically. During this time the AutoSync function is not enabled. To exit the power save mode, press any button. After five minutes, the display returns to power save mode.
The power save mode will not be enabled during training session recording.
The time period during which the power save mode is enabled, can be modified in the WebSync software, to better suit your training schedule. For more information, see WebSync Help.↑ Back to top
The battery lifetime for the RCX3 training computer is on average 7-8 months and depends on which features and sensors you use. The suggestions below will help you to lengthen the battery lifetime.
To get the 8 months lifetime for the battery, take the following settings into use in your training computer:
Set the AutoSync off in MENU > Connect > AutoSync > Off.
Set the GPS sensor off in MENU > Settings > Sport profiles, when you do not need speed, distance or location data.
The Polar training computer shows your performance indicators. Polar training computer is designed to indicate the level of physiological strain and recovery during and after exercise session. It measures heart rate, speed and distance when cycling with a Polar CS speed sensor W.I.N.D. It also measures speed and distance when running with a Polar s3+ stride sensor or with a Polar G5 GPS sensor / Polar G3 GPS sensor W.I.N.D.. The Polar CS cadence sensor W.I.N.D. is designed to measure cadence when cycling. No other use is intended or implied.
The Polar training computer should not be used for obtaining environmental measurements that require professional or industrial precision.
Electromagnetic Interference and Training Equipment
Disturbance may occur near electrical devices. Also WLAN base stations may cause interference when training with the training computer. To avoid erratic reading or misbehavior, move away from possible sources of disturbance.
Training equipment with electronic or electrical components such as LED displays, motors and electrical brakes may cause interfering stray signals. To solve these problems, try the following:
Remove the heart rate sensor strap from your chest and use the training equipment as you would normally.
Move the training computer around until you find an area in which it displays no stray reading or does not flash the heart symbol. Interference is often worst directly in front of the display panel of the equipment, while the left or right side of the display is relatively free of disturbance.
Put the heart rate sensor strap back on your chest and keep the training computer in this interference-free area as much as possible.
If the training computer still does not work with the training equipment, it may be electrically too noisy for wireless heart rate measurement.
For further information, see www.polar.com/support.
Training may include some risk. Before beginning a regular training program, it is recommended that you answer the following questions concerning your health status. If you answer yes to any of these questions, we recommend that you consult a doctor before starting any training program.
Have you been physically inactive for the past 5 years?
Do you have high blood pressure or high blood cholesterol?
Are you taking any blood pressure or heart medication?
Do you have a history of breathing problems?
Do you have symptoms of any disease?
Are you recovering from a serious illness or medical treatment?
Do you use a pacemaker or other implanted electronic device?
Do you smoke?
Are you pregnant?
Note that in addition to training intensity, medications for heart conditions, blood pressure, psychological conditions, asthma, breathing, etc., as well as some energy drinks, alcohol, and nicotine may also affect heart rate.
It is important to be sensitive to your body’s responses during training. If you feel unexpected pain or excessive fatigue when training, it is recommended that you stop the training or continue at a lighter intensity.
Note! If you are using a pacemaker, you can use Polar training computers. In theory interference to pacemaker caused by Polar products should not be possible. In practice no reports exist to suggest anyone ever having experienced interference. We cannot however issue an official guarantee on our products' suitability with all pacemakers or other implanted devices due to the variety of devices available. If you have any doubts, or if you experience any unusual sensations while using Polar products, please consult your physician or contact the implanted electronic device manufacturer to determine safety in your case.
If you are allergic to any substance that comes into contact with your skin or if you suspect an allergic reaction due to using the product, check the listed materials in Technical Specifications. To avoid any skin reaction to the heart rate sensor, wear it over a shirt, but moisten the shirt well under the electrodes to ensure flawless operation.
Your safety is important to us. The shape of the s3+ stride sensor* is designed to minimize the possibility of it getting caught in something. In any case, be careful when running with the stride sensor in brushwood, for example.
The combined impact of moisture and intense abrasion may cause a black color to come off the heart rate sensor’s surface, possibly staining light-colored clothes. If you use perfume or insect repellent on your skin, you must ensure that it does not come into contact with the training computer or the heart rate sensor.
Using RCX3 Training Computer in water: The training computer is water resistant. However, heart rate measurement does not work in water. You can use the training computer under water as a watch but it is not a diving instrument. To maintain water resistance, do not press the buttons of the training computer under water. Using the training computer in excessive rainfall may also cause interference.
WARNING: This product and its packaging contain chemicals known to the State of California to cause cancer, birth defects or reproductive harm. This notice is provided in accordance with California’s Proposition 65. More information: http://www.polar.com/regulatory_information
Average 8 months if you only use the heart rate sensor, and train an average of 1h/day 7 days/week.
Average 7,5 months if you use the heart rate sensor and one other sensor, and train an average of 1h/day 7 days/week.
Average 7 months if you use the heart rate sensor and two other sensors, and train an average of 1h/day 7 days/week.
Battery life has been calculated with the presumption that the power save mode is on.
Battery sealing ring:
-10 °C to +50 °C / 14 °F to 122 °F
Training computer materials:
PMMA lens with hard coating in top surface, training computer body ABS+GF metal parts stainless steel
Wrist strap and buckle materials:
Polyurethane (TPU)/Silicone, stainless steel
Better than ± 0.5 seconds / day at 25 °C / 77 °F temperature.
Accuracy of heart rate monitor:
± 1% or 1 bpm, whichever larger. Definition applies to stable conditions.
Heart rate measuring range:
Current speed display range:
0-127 km/h or 0-75 mph (when measuring speed with s3+ stride sensor or CS speed sensor)
0-400 km/h or 0-248.5 mph (when measuring speed with G5/G3 GPS sensor)
30 m (Suitable for bathing and swimming)
Training computer limit values
Maximum number of files:
Maximum time recorded to file:
99 h 59 min 59 s
Maximum time recorded to file with different sensor combinations:
Heart rate + stride sensor
Heart rate + GPS sensor
Heart rate + CS speed sensor
Heart rate + CS cadence sensor
Heart rate + stride sensor + GPS sensor
Heart rate + GPS sensor + CS speed sensor
Heart rate + GPS sensor + CS cadence sensor
Heart rate + CS speed sensor + CS cadence sensor
Heart rate + GPS sensor + CS speed sensor + CS cadence sensor
Stride sensor + GPS sensor
GPS sensor + CS speed sensor
GPS sensor + CS cadence sensor
GPS sensor + CS speed sensor + CS cadence sensor
CS speed sensor
CS cadence sensor
CS speed sensor + CS cadence sensor
The training computer stores the data in five second intervals.
Maximum number of laps recorded in one training session:
Maximum number of automatic laps recorded in one training session:
99999.99 km / 99999.99 mi
9999 h 59 min 59 s
999 999 kcal
Total training files count:
Heart rate sensor
Battery life Polar WearLink W.I.N.D.:
Battery life Polar H2:
Battery life Polar H3:
Battery sealing ring:
O-ring 20.0 x 0.90 Material Silicone
-10 °C to +40 °C / 14 °F to 104 °F
38% Polyamide, 29% Polyurethane, 20% Elastane, 13% Polyester
30 m (Suitable for bathing and swimming).
The Polar H3 heart rate sensor does not measure heart rate in water.
The Polar RCX3 training computer applies the following patented technologies, among others:
OwnIndex® technology for fitness test.
OwnCal® personal calorie calculation.
Polar WebSync Software and Polar DataLink™
Operating system: Microsoft Windows XP/Vista/7 or Mac OS X 10.5 (Intel) or newer
Free USB port for DataLink
Water resistance of Polar products is tested according to International IEC 60529 IPX7 (1m, 30min, 20ºC). Products are divided into four different categories according to water resistance. Check the back of your Polar product for the water resistance category and compare it to the chart below. Please note that these definitions do not necessarily apply to products of other manufacturers.
Marking on case back
Water resistant characteristics
Water resistant IPX7
Not suitable for bathing or swimming. Protected against wash splashes and raindrops. Do not wash with a pressure washer.
Not suitable for swimming. Protected against wash splashes, sweat, raindrops etc. Do not wash with a pressure washer.
Water resistant 30 m/50 m
Suitable for bathing and swimming
Water resistant 100 m
Suitable for swimming and snorkeling (without air tanks)
What should I do if...
...the battery symbol and Low battery is displayed?
The low battery indicator is usually the first sign of an expired battery. However, in cold conditions the low battery indicator may appear. The indicator will disappear as soon as the temperature rises enough. When the symbol appears, the training computer sounds and backlight are automatically deactivated. For further information on changing the battery, see 13. Important Information.
...I do not know where I am in the menu?
Press and holduntil the time of day is displayed.
...there are no reactions to any buttons?
Reset the training computer by pressing all the buttons simultaneously for two seconds until the display fills with digits. Press any button, select language and set the time and date in Basic Settings after the reset. All other settings are saved. Skip the rest of the settings by pressing and holding.
...the heart rate reading becomes erratic, extremely high or shows nil (00)?
Make sure the heart rate sensor strap has not loosened during exercise.
Make sure the textile electrodes in the sports apparel fit snugly.
Make sure the electrodes of the heart rate sensor strap are moistened.
Make sure the heart rate sensor is clean. Strong electromagnetic signals can cause erratic readings. For further information, see Precautions.
If the erratic heart rate reading continues despite moving away from the source of disturbance, slow down your speed and check your pulse manually. If you feel it corresponds to the high reading on the display, you may be experiencing cardiac arrhythmia. Most cases of arrhythmia are not serious, but consult your doctor nevertheless.
A cardiac event may have altered your ECG waveform. In this case, consult your physician.
…Check heart rate sensor! is displayed and your training computer cannot find your heart rate signal?
Make sure the heart rate sensor strap has not loosened during exercise.
Make sure the electrodes of the heart rate sensor are moistened.
Make sure the electrodes of the heart rate sensor are clean and undamaged.
If you have done all of the above-mentioned actions, and the message still appears and heart rate measurement does not work, the battery of your heart rate sensor may be empty. For further information, see 13. Important Information.
...Calibration failed is displayed?*
Calibration did not succeed and you need to re-calibrate. Calibration fails if you move during the process. Once you reach lap distance, stop running and stand still for calibration. The range of the calibration factor during manual calibration is 0.500-1.500. If you have defined the calibration factor below or above these values, calibration fails.
*Optional s3+ stride sensor required.
ZoneOptimizer determination fails?
Make sure that the electrodes of the heart rate sensor are moistened.
Make sure the heart rate sensor strap has not loosened during exercise.
Make sure the heart rate sensor electrodes are clean and undamaged.
Make sure you have followed the instructions carefully.
If you have done all of the above-mentioned actions, and the message still appears and heart rate measurement does not work, the battery of your heart rate sensor may be empty. For further information, see 13. Important Information.↑ Back to top
This guarantee does not affect the consumer’s statutory rights under applicable national or state laws in force, or the consumer’s rights against the dealer arising from their sales/purchase contract.
This limited Polar international guarantee is issued by Polar Electro Inc. for consumers who have purchased this product in the USA or Canada. This limited Polar international guarantee is issued by Polar Electro Oy for consumers who have purchased this product in other countries.
Polar Electro Oy/Polar Electro Inc. guarantees the original consumer/purchaser of this device that the product will be free from defects in material or workmanship for two (2) years from the date of purchase.
The receipt of the original purchase is your proof of purchase!
The guarantee does not cover the battery, normal wear and tear, damage due to misuse, abuse, accidents or non-compliance with the precautions; improper maintenance, commercial use, cracked, broken or scratched cases/displays, armband, elastic strap and Polar apparel.
The guarantee does not cover any damage/s, losses, costs or expenses, direct, indirect or incidental, consequential or special, arising out of, or related to the product.
Items purchased second hand are not covered by the two (2) year warranty, unless otherwise stipulated by local law.
During the guarantee period, the product will be either repaired or replaced at any of the authorized Polar Service Centers regardless of the country of purchase.
Guarantee with respect to any product will be limited to countries where the product has been initially marketed.
Regulatory information is available at www.polar.com/support.
To see the RCX3-specific certification and compliance marking, select MENU > Settings > General settings, and press and hold for two seconds.
This marking shows that the product is protected against electric shocks.
Polar Electro Oy is a ISO 9001:2008 certified company.
© 2013 Polar Electro Oy, FI-90440 KEMPELE, Finland. All rights reserved. No part of this manual may be used or reproduced in any form or by any means without prior written permission of Polar Electro Oy.
The names and logos in this user manual or in the package of this product are trademarks of Polar Electro Oy. The names and logos marked with a ® symbol in this user manual or in the package of this product are registered trademarks of Polar Electro Oy. Windows is a registered trademark of Microsoft Corporation and Mac OS is a registered trademark of Apple Inc.↑ Back to top
The material in this manual is for informational purposes only. The products it describes are subject to change without prior notice, due to the manufacturer’s continuous development program.
Polar Electro Inc./Polar Electro Oy makes no representations or warranties with respect to this manual or with respect to the products described herein.
Polar Electro Inc./Polar Electro Oy shall not be liable for any damages, losses, costs or expenses, direct, indirect or incidental, consequential or special, arising out of, or related to the use of this material or the products described herein.
This product is protected by the incorporeal rights of Polar Electro Oy as defined by the following documents: FI88972, DE4223657.6 A,FI9219139.8,FR 92.09150, GB 2258587, HK 306/1996, SG 9592117-7, US 5486818, FI 111514B, DE19781642T1, GB2326240, HK1016857, US6277080, US20070082789, EP1795128, FI20085432, US12/434143, EP09159601.5, FI114202, US6537227, EP1147790, HK1040065, FI115289, EP1127544, US6540686, HK1041188, EP2070473A1, US20090156944, FI110915, US7324841, EP1361819, FI6815, EP1245184, US7076291, HK1048426, FI 110303, US6104947, EP0748185, JP3831410, FI 96380, EP0665947, US5611346, JP3568954, FI23471, US D492999SS, EU0046107-002, EU0046107-003. Other patents pending.
Polar Electro Oy
Tel +358 8 5202 100
Fax +358 8 5202 300
EN 4.0 05/2013↑ Back to top