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Homeby Witness Moecki
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RE: Polar OH1 - Optical Heart Rate Monitor armband-Ditch the Chest Strap

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abriy (51)in #steemhunt • 6 years ago

Heart-rate must be monitored for some people during the activities. Polar OH1 would be great product for them.

6 years ago in #steemhunt by abriy (51)
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