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Polar updates algorithms to make heart rate sensor better in new M430 running watch | Ars Technica
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Running Tech – The Polar M430 and Polar Flow – Runners Knees
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Amazon.com: POLAR M430 GPS Running Watch, Black (90066335),Medium/Large : Electronics
Polar Announces Nike+ Run Club Integration for Line of Connected Products - PezCycling News
Polar M430 first take review: It's an Olympic coach for your wrist - CNET
Polar M430 HR GPS-Sports Watch - Running Watch - Heart Rate Watches - Digital - All
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Polar M430 review | TechRadar
Polar M430 first take review: It's an Olympic coach for your wrist - CNET
