Well, this is probably one of the best wireless presenters around at the moment. I have tried a couple of other makes that are not as responsive. One of the best points about this presenter is the range, it responds comfortably at a distance of 30 metres and does not require a direct line of site between you and the laptop/pc.
Another very useful feature is the wireless mouse mode (there is a switch on the side to switch between presentation and mouse control). I find the up, down, left and right arrows the best way to control a mouse wirelessly as I feel it gives me the most control over where the cursor is going. It can go diagonally too if you hold down two of the arrows. The speed of movement is just right. You can then left-click and right-click if you wish.
Other useful features include a red laser pointer which automatically turns off if the button is pressed down for more than 20 seconds. This is a great idea as sometimes, when I have carried presenters around before, the laser button has been compressed and the laser pointer was on till the batteries ran out.
The presenter itself looks professional with a shiny metallic edge (note: the casing is plastic not metal) and is housed in a high quality, durable, pocket sized case that has 3 compartments, one for the presenter, one for the usb dongle, and one that I currently use for my USB memory sticks that contain the presentation I will be giving.
And at the current price, it is very competitive with other leading brands that produce similar products of less quality.
I confidently recommend this to anyone looking for a reliable wireless presenter containing all the features they could possibly need.