If your Polar heart rate monitor stopped working, maybe it’s time to change the battery! Inside, my tips for changing the battery inside your chest strap.
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polar heart rate monitors
Fit Gear Review: The Polar RC3 GPS with Heart Rate Sensor: First Introductions
written by Erika Nicole Kendall
The start of a comprehensive guide to the Polar RC3 GPS, a heart rate monitor watch.
Why I love my heart rate monitor, which one I use, and where you can order your own.