3 ms·
In a study two years ago Apple Watch was the most accurate tested device with a median error of 2%. https://www.macrumors.com/2017/05/24/apple-watch-heart-rate
by ralfd 8y ago
In a study two years ago Apple Watch was the most accurate tested device with a median error of 2%.
https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-most-accurate-fitness-study/ https://www.macrumors.com/2017/05/24/apple-watch-heart-rate-...