Specs are quantitative aspects of the option such as the price
Pros
Pro
Details about an event can be viewed without having to open a calendar appointment
Clicking on a day in the month view will display all events that are planned for that day along with important details about each event. Swiping left/right will allow you to switch between days.
While it's possible to add events right from the widget itself without having to open a calendar app, the scheduling options are limited compared to a good calendar app.