The Mi Band 5 now has improved sleep monitoring, with continuous heart rate tracking as you snooze. Xiaomi claims this will help identify sleep problems such as irregular and sporadic sleep patterns, and rapid eye movement. Based on the data collected, the app will give you suggestions on how to improve your sleep quality. The Mi Band 5 also gets a built-in SpO2 or blood oxygen tracker. This was absent from the Mi Band 4. The tracker can apparently detect your blood oxygen saturation levels every second, for eight hours in a row. That’s a total of 28,800 reading in a span of eight hours. This continuous SpO2 monitoring is also aimed at improving sleep quality. It will work in tandem with the Mi Band 5’s sleep tracking function to provide more comprehensive sleep quality feedback.
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