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Polar M400 Sports Watch with GPS & Heart Rate Monitor 90057191
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Polar - Runners! Stride sensor support for Polar M400 is here. We've also improved the GPS fix! Learn more: http://bit.ly/1GJC6jr | Facebook
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Polar M400 with heart rate sensor review - The Gadgeteer
![Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com](https://middleagemarathoner.com/wp-content/uploads/2018/10/Polar-Flow11.jpg "Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com")
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Polar M400 Tutorial Get Started - YouTube
