The Polar A360 could have been a brilliant addition to the current glut of activity trackers, but it’s let down by some pretty major issues. The heart rate data accuracy issues along with the omission of distance tracking stand out as the biggest flaws. It’s a shame really, because Polar has the basis of a good device here and is far more appealing than the Loop or Loop 2. If you’ve got the money to spend and you’re a fan of Polar, the M400 feels like a better all-round option. You still get the activity tracking along with GPS and while you don’t get a built-in heart rate monitor, it has a lot more going for it if you’re willing to spend a little extra.
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