Can I get some help. My m400 wont charge, so cannot connect to flowsync app on PC. : r/Polarfitness
Polar M400 User Manual
Polar - #TeamPolar, we've got a bunch of updates for you: - M400 and V800 firmware - Flow web service - Flow app iOS And the icing on the cake: Flow app
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Polar - Incoming! Android Smart Notifications are now available on Polar M400! More info & how to activate here: http://updates.polar.com/ | Facebook
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Updated] Why I switched from Garmin to Polar M400 - Middleagemarathoner.com
Polar M400 90051341 GPS Sports Watch with Heart Rate Sensor - Black
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