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Amazon.com : POLAR A370 Fitness Tracker with 24/7 Wrist Based Heart Rate White, Medium/Large : Sports & Outdoors
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Polar A360 Fitness Tracker with Wrist Heart Rate Monitor - Medium, Black : Amazon.co.uk: Sports & Outdoors
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Polar A360 - Activity tracker with band - charcoal black - band size: S - Bluetooth - 1.12 oz - Walmart.com
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