Polar updates algorithms to make heart rate sensor better in new M430 running watch | Ars Technica
Review: Running or not, you'll want the Polar M430 on your wrist | Ars Technica
Polar M430 Advanced Black Running Watches with Black Silicone Band with Polar H10 Heart Rate Sensor and Fitness Tracker - Turquoise - M-XXL - Walmart.com
Polar M430 review
Polar M430 Advanced White Running Watches with White Silicone Band with Polar H10 Heart Rate Sensor and Fitness Tracker - Orange - M-XXL - Walmart.com - Walmart.com
Polar M430 Review | PCMag
Polar M430 In-Depth Review | DC Rainmaker
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Polar M430 review | TechRadar
Polar M430 User Manual | Training with wrist-based heart rate
Polar M430 HR Review | Tested by GearLab
Polar M430 Review | PCMag
Polar M430 HR Review | Tested by GearLab
Polar M430 | Running watch with GPS tracker and pace | Polar Global