Polar OH1 is an optical heart rate monitor armband that combines versatility, comfort and simplicity. It fits comfortably around your arm and tracks heart rate with Polar’s high-quality optical heart rate solution.
Getting started with the Polar OH1: https://www.polar.com/en/products/accessories/oh1-optical-heart-rate-sensor
Register for Polar Flow coaching service here: http://flow.polar.com/
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