H. PRECAUTIONS
H 73
Using the Polar Heart Rate Monitor in a Water Environment
Your Polar heart rate monitor is water resistant to 160 feet/ 50 meters. To
maintain the water resistance, do not operate the buttons of the wrist
receiver under water.
Users measuring heart rate in a water environment may experience
interference for the following reasons:
•Pool water with a high chlorine content and seawater are very
conductive. The electrodes of a Polar transmitter may becoome short
circuited which prevents EKG signals from detection by the transmitter
unit.
•Jumping into the water or strenuous muscle movement during
competitive swimming may cause water resistance that shifts the
transmitter on the body to a location where it is not possible to pick up
ECG signal.
•The ECG signal strength varies depending on the individual’s tissue
composition and the percentage of people who have problems in heart
rate measuring is considerably higher in a water environment than in
other use.