Polar, maker of some of the best running watch offerings on the market, has unveiled its brand new Vantage M3 smartwatch, the successor to its formidable multi-sport fitness companion.With the Vantage M3, Polar says it’s bringing ‘class-leading training and health features’ to its mid-range watch for the first time.New features include the addition of dual-frequency GPS for more accurate measurements when running and cycling, offline maps to download and navigate without the internet on-wrist, wrist-based ECG readings, nightly skin
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