Target heart rate zone, Fitness safety, Mhr) = maximum heart rate – Keys Fitness ET520D User Manual

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Target heart rate zone, Fitness safety, Mhr) = maximum heart rate | Keys Fitness ET520D User Manual | Page 11 / 11 Target heart rate zone, Fitness safety, Mhr) = maximum heart rate | Keys Fitness ET520D User Manual | Page 11 / 11
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