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Take good care of the optical heart rate sensor
Keep the optical sensor area on the back cover scratch-free. Scratches and dirt will reduce the performance of the wrist-
based heart rate measurement.
Avoid using perfume, lotion, suntan/sunscreen or insect repellent on the area where you wear your watch. If the watch
comes into contact with these or any other chemicals, wash it with a mild soap and water solution and rinse well under
running water.
Storing
Keep your training device in a cool and dry place. Do not keep it in a damp environment, in non-breathable material (a
plastic bag or a sports bag) nor with conductive material (a wet towel). Do not expose the training device to direct sunlight
for extended periods, such as by leaving it in a car or mounted on the bike mount. If you won't be using your watch for a
while, store it partially charged. The battery slowly loses its charge when it is stored. If you are going to store the watch for
several months, it is recommended to recharge it after a few months. This will prolong the battery lifetime.
Do not leave the device in extreme cold (below –10 °C/14 °F) and heat (above 50 °C/120 °F) or under direct sunlight.
Service
During the two-year guarantee/warranty period we recommend that you have service 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 support.polar.com and country-specific websites.
Precautions
Polar products (training devices, activity trackers and accessories) are designed to indicate the level of physiological strain
and recovery during and after exercise session. The Polar training devices and activity trackers measure heart rate and/or
tell your activity. The Polar training devices with an integrated GPS show speed, distance and location. See
www.polar.com/en/products/accessories for a complete list of compatible accessories. The Polar training devices with a
barometric pressure sensor measure altitude and other variables. No other use is intended or implied. The Polar training
device should not be used for obtaining environmental measurements that require professional or industrial precision.
Interference During Training
Electromagnetic Interference and Training Equipment
Disturbance may occur near electrical devices. Also WLAN base stations may cause interference when training with the
training device. 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:
1. Remove the heart rate sensor strap from your chest and use the training equipment as you would normally.
2. Move the training device 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.
3. Put the heart rate sensor strap back on your chest and keep the training device in this interference-free area as
much as possible.
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