How often is mi band's heart rate measured?

The first thing you can confirm is the frequency of the version of mi band 6NFC that supports automatic heart rate detection, which is about 120 seconds. Functionally, mi band 6 has added the function of monitoring blood oxygen saturation, supporting night start-up, continuous measurement and auxiliary sleep monitoring. According to the changes of heart rate and blood oxygen during sleep, we can judge the quality of breathing during sleep and provide health reports. At the same time, the built-in high-performance PPG biosensor reduces the interference of irregular movement, and can calculate according to the changing law of heart rate variability and respiratory information during sleep and provide analysis reports. In the aspect of heart rate monitoring, mi band 6 adds a reminder of abnormal heartbeat, and measures the heart rate through the bracelet for 24 hours to assess the heart condition and prompt abnormal heartbeat.