Amazon | Polar A360 Fitness Tracker with Wrist Heart Rate Monitor Medium (Certified Refurbished) by Polar | ポラール(POLAR) | 心拍計
Polar A360 Fitness Tracker with Wrist Heart Rate Monitor - Medium, Black : Amazon.co.uk: Sports & Outdoors
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Polar - Introducing the new Polar A360 fitness tracker with wrist-based heart rate monitoring, color touch screen, 24/7 activity tracking and much more! http://polar.com/a360 #AccurateSimplicity | Facebook
Polar's new fitness tracker constantly monitors your heart rate