Basically, I find this watch versatile and practical. But I have not yet discovered a calendar function. There are different (many) dials with different indications. Often with date and/or day of the week. But then it has it with the calendar.

For me it is like this, or I understand it like this, that with calendar it is meant that you can have reminders of appointments that you have entered in the calendar app on the smartphone displayed on the watch. I use the standard iOS app and have Outlook installed, and both apps show the reminders I have defined for each appointment on the watch as a notification. This is practical because you don't always have your smartphone at hand.

There are different displays for the dial to choose from.