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Road Trail Run: Polar M430 GPS Heart Rate Watch and Polar Flow Review: Simple, Comfortable, Accurate with a Great Free Training Platform
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PolarGlobal on Twitter: "Introducing #PolarM430 GPS running watch with wrist-based heart rate and 24/7 activity tracking. https://t.co/OLafZnuwlK https://t.co/dj4a9IAhhN" / Twitter
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