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There is plenty of variation between how different Android devices handle the
technologies used in our products and services, such as Bluetooth Low
Energy (BLE) and different standards and protocols. Because of this,
compatibility varies between phone manufacturers, and unfortunately Polar
cannot guarantee that all features can be used with all devices.
Water resistance of Polar products
Most Polar products can be worn when swimming. They are not, however,
diving instruments. To maintain water resistance, do not press the buttons of
the device under water. When measuring heart rate in water with a Polar
heart rate sensor attached around your chest, you may experience
interference for the following reasons:
•
Pool water with high chlorine content, and seawater are very conductive.
The electrodes of the heart rate sensor may short-circuit, preventing ECG
signals from being detected by the heart rate sensor.
•
Jumping into water or strenuous muscle movement during competitive
swimming may shift the heart rate sensor to a location on the body where
ECG signals cannot be picked up.
•
The ECG signal strength is individual and may vary depending on the indi-
vidual's tissue composition. Problems occur more frequently when meas-
uring heart rate in water.
Polar devices with wrist-based heart rate measurement (A360, A370, M200
and M600) are suitable for swimming and bathing. They will collect your
activity data from your wrist movements also when swimming. In our tests,
however, we found that the wrist-based heart rate measurement doesn't
work optimally in water, so we cannot recommend wrist-based heart rate
measurement for swimming.
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