heartratewatchcompany.com/polar-rc3-p/rc3.htm

Polar RC3 has great in-built features but you can always pair up with additional add-ons to enhance its functionality. There is Polar H3 chest strap that is both soft and comfortable. For the cycling version, you can try W.I.N.D cadence sensor. Cadence can also be measured with s3+ foot pod.

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