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Polar M400 GPS Running Watch + Heart Rate Sensor Fitness Tracker - White : Amazon.com.au: Sports, Fitness & Outdoors
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RuenTech Bands for Polar M400 / M430 Watch Strap Soft Silicone Wristband Sports Band for Polar M400 and M430 GPS Smart Sports Watch-Black M(5.5''-8.0'') : Amazon.com.au: Electronics
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Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
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