The reception is very good. In my first use in a 20m long seminar room of the presenter from the last row has been working reliably.
There were times pointing out that the mouse pad of the laptop deactivated when the presenter has been closed. This I can confirm ncht. With our new laptop with Win8 the pad continues to function.
This Presenter makes it a really good figure and the timers help, not to mention the time. If the timer expires and no one responds, then after that there regularly again a short memory. Very good with "annoying" questioners who did not want to treat the break and destroy the speakers the time concept to others.