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Watch out, Whoop: Polar joins the fitness band race with a premium option
Polar follows Garmin's lead as 'optional' subscriptions becomes the new normal
Coros vs. Garmin vs. Polar fitness test: How the new Vertix 2S compares to the Forerunner 965 and Vantage V3
Polar's Vantage V3 fitness watch is a big upgrade that costs $600
