Polar Vantage V3 – Is it accurate? More: Polar Vantage V3 Review TL;DR – GPS is good but could be improved, oHR is not quite good enough, elevation seems OK, ECG/EKG seems too varied and SpO2 might be OK. GPS Accuracy Over a variety of exercise types in a variety of situations, the Vantage V3 produced generally good results but certainly not the market-leading results I would expect. It’s new tech for Polar, so let’s hope they will bag a few tweaks over the coming months. An easy 5km parkrun The 5km parkrun at Bushy Park should present Vantage V3…

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