TOP FITNESS
May 11, 2021
2 minutes
WORDS: SARAH SELLENS.
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Invented by Polar Electro in 1977, wireless heart rate monitors have been a consistently popular accessory on the fitness scene in recent years. And now, (£139.99, ) is the first device to offer a dual PPG and ECG reading. What this means is it’s uber accurate, because it uses an optical blood flow sensor
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