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Polar A3 HRM



The Polar A3 is more than a basic heart rate monit
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Polar A3 HRM
The Polar A3 is more than a basic heart rate monitor with watch function, date and stopwatch. It also offers high and low alarms, average heart rate, time in target zone, Automatic HR Limits which is an easy way to find out age–predicted target heart rate zone, Zone Pointer, a visual guide to the