Does the Xiaomi Smart Band 9 Pro support continuous heart rate monitoring?

The Xiaomi Smart Band 9 Pro supports continuous monitoring. You can go to the application list on the band to navigate the Heart rate APP and tap to view the current day’s heart rate details. Scroll up and tap [Settings] to set the preference you want, such as [Continuous monitoring], [High HR alert], or [Low HR alert]. Additionally, you can set [Off], [Smart], [1 min], [10 mins], or [30 mins] in [Continuous monitoring]. If you enable [Smart], the band will adjust monitoring frequency based on your activity level.
On the Mi Fitness APP, you can go to [Device] >> [Fitness and health] >> [Heart rate] to set. The band will automatically measure and record your heart rate according to the specified interval. Different modes impact battery life differently.