By August, the operation of interactive elements is not a problem. The observatory also works the presentation in 2-monitor operation in presentation view - as the Logitech must totally fit. Another useful feature is the ability to adjust the volume during playback, and the "OFF button" as the battery discharges not prematurely due to accidental pressing.
Of course, of course, is also a (red) laser pointer available.
The Presenter is very lightweight and sits comfortably in the hand, can not quite keep up in quality with the Logitech but. Overall, the "strong" August is highly recommended.