1. With AOD turned on and health monitoring fully enabled, the normal usage days of the Xiaomi Smart Band 9 are about 8 days (Turn on AOD , heart rate monitoring, all-day stress, all-day blood oxygen, heart health monitoring, REM sleep, fighting games, and other functions are used normally.) If other functions are used frequently, the usage period will be further reduced to about 3 days;
2. Without AOD, and with health monitoring fully turned on, the normal usage days of the Xiaomi Smart Band 9 are about 18 days (Heart rate detection, all-day stress, all-day blood oxygen, heart health detection, REM sleep, fighting games, and other functions are used normally). If other functions are used frequently, the usage period will be further reduced to about 8 days.
