Before measuring the battery drain make sure your band is charged to 100%
Battery backup is based on the usage scenarios, using the watch for a long time for heart rate monitoring may drain more battery.
This may occur if the number of screen wake-up times increases when you raise your wrist in special scenarios.
The power consumption of your watch may increase when you enable auto heart rate monitoring.
How to Reduce the battery consumption of the Watch:
Disable Continuous heart rate monitoring in the Fit Cloud Pro app.
Disable Notifications in the Fit Cloud Pro app if you do not need the notification function.
Disable Raise wrist to wake screen in the Fit Cloud Pro app if you do not need to use this function.