If you enable the Female Health option from the SMARTEE application, your device will show you by navigating down the Health Data menu, the information related to your menstrual cycle.
From SMARTEE, you can set your usual period length, your usual cycle length, and set your last period start date.
You can also set the time and days in advance you want the device to notify you that your period is about to start and ovulation begin.
*Notice* This feature is for informational purposes only and should not be used in place of other pregnancy protection methods.