The developer can decide if date and time should be selected or just the time. The date is selected via standard DateField. The unique part is the field that enables selecting the time. The user can enter the values of the hours, the minutes and the seconds, or can use the stepper on the right side or the mouse scroll. The field for the seconds can be hidden if it isn't needed.The component uses Date and DateField objects, so you have all theirs properties and methods and some new specific to the new component.