Fitness tracker brand Polar has brought a new firmware update to its best running watch, the Polar Vantage V3. It’s available to install now, and you can update your watch by using the Flow mobile app or via computer using FlowSync. In the midst of the rollout of Polar’s latest running watch, the Grit X2 Pro, the Polar Vantage V3 will receive some of the X2 Pro’s features thanks to a new firmware update (version 2.0.19). While it’s already a
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