POLAR M400 mit H7 Herzfrequenz-Sensor, Sportuhr/Activity Tracker, 130-230 mm, Pink Sportuhr/Activity Tracker, Größe 130-230 mm in Pink kaufen | SATURN
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Compare Polar M400 vs Polar RS300X - Polar M400 vs Polar RS300X Comparison by Price, Specifications, Reviews & Features | Gadgets Now
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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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Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep - CNET
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