Multiple months view
RadCalendar can be easily configured to show more than one month in the calendar area. Thus, you can make the navigation easier and faster.
Styling and appearance
RadCalendar can be fully customized using Expression Blend. There are also several pre-defined themes that can be used to style the calendar control.
Advanced event-handling model
RadCalender supports routed events.
Selection range
Set the range of the dates the user will be able to navigate to, and a constraint on the dates that can be selected.