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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Polar M400 Activity Tracker/GPS Running Watch With Heart Rate Sensor! | Gadget Explained Reviews Gadgets | Electronics | Tech
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Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
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Polar announces M400 footpod support, also smartphone notifications for V800/M400/A300 | DC Rainmaker
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Polar M400 Activity Tracker/GPS Running Watch With Heart Rate Sensor! | Gadget Explained Reviews Gadgets | Electronics | Tech
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Polar M400 Activity Tracker/GPS Running Watch With Heart Rate Sensor! | Gadget Explained Reviews Gadgets | Electronics | Tech
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