Normally, I am indeed right on laptop at my lectures, but not always it works. Therefore I was looking for exactly what I have now. The device is small and cute does smoothly all I want. OK, you can start any films, this one has to still go to the computer. But that's not a problem. Everything else works simple and very good, also the built-in laser pointer works well. I've now tried several times, even in private at a birthday party, where my computer then seemingly at random during a performance and even 1-2 hours (the chance but was in my pocket!) Nice pictures thrown alternately to the wall has.
What pleased me most: clean Go on with the USB Bluetooth adapter, and go. No set-up etc, just ran.
I am extremely pleased, and also the dimensions permit unobtrusive and safe handling. Is worth the money.