Setting that aside, the Smart Band 11 Active is said to offer up to 21 days of battery life when being used lightly. Alternatively, the fitness tracker should last 8 days between charging its 300 mAh battery under the following circumstances:

The device was fully charged and restored to factory settings with the default static watch face. Advanced monitoring and sleep breathing quality monitoring were enabled with sleep tracked for 8 hours per day; all-day heart rate monitoring was enabled with measurements every minute; blood oxygen saturation was measured manually twice per day; all-day stress monitoring was enabled; notifications were enabled (200 messages, 15 incoming calls, and 3 alarms per day); display was activated by lifting the wrist 500 times per day; app was synced once per day; and workout tracking was enabled for 90 minutes per week.

Xiaomi includes 50 fitness modes, compatibility with Android and iOS, and a PPG sensor capable of tracking heart rates, SpO2 levels, sleep, stress and women’s health. Currently, we have only officially found the Smart Band 11 Active for sale in Poland, where it costs PLN 139 (~$38) in any one of its three colours. According to Quandt and WinFuture, the Smart Band 11 Active will land in the Eurozone for around €40 (~$45).