14
Jun
The band illuminates the blood artery for a short time with LED lights and photodiodes, and the heart rate is monitored by the amount of green light absorbed. Heart rate records — both resting and active — are virtually as accurate as a blood oximeter device. In the band itself, it displays a graph of heart rate & SpO2 throughout the day. When compared to an oximeter, SpO2 (blood oxygen monitoring) is nearly as precise. Additionally, the app tracks stress levels throughout the day. Consumer tastes range significantly when it comes to selecting one of these phones. Some individuals like…