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The Polar M400 fitness tracker logs your outdoor runs with GPS and measures how much activity you get all day long. It's a compelling choice for runners, but a little too chunky to work as an all-day wearable.
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Polar M400 Running Watch - Black Colour, Men's Fashion, Watches & Accessories, Watches on Carousell
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Tech Review: Polar M400 GPS Running Watch - That Shelf
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