Kensington wireless remote for presentations in class

It's a typical day in class. You are showing a presentation using your computer to begin a topic with students. Or maybe your students are doing the presentations. Either way, without some type of remote you are stuck by the computer to change the slides. But, as a teacher, you need to move around the classroom to be aware of what is going on and to make students aware that you know what is going on. You need a remote for the computer and it needs to be durable and reliable. Enter the Kensington Wireless Presenter with Laser Pointer. I have been using mine for several months now and it has stood the test of time. The kids also like to use it. The dongle connects to a USB port and Windows already has the software driver so it only takes a few seconds for the computer to recognize it. It has only 4 buttons - forward, backward, stop and one for the laser pointer. It's simple, easy to hold because of the shape and it is sturdy. I have dropped mine several times and there is not even a mark. I am not recommending you play hockey with it but, it should stand up to normal wear and tear. The USB dongle stores conveniently in the body of the presenter. My only complaint is that the laser pointer is not as bright as others I have tried. But it can be seen on the screen and a whiteboard would show it even brighter. The pointer uses AAA batteries so you don't have to worry about recharging it or throwing it away if the rechargeable battery goes bad. I find it a good idea to always have a supply of AA and AAA batteries in my desk. (But don't make it public knowledge because everyone will be coming to you for batteries.) The price for the Kensington is at the lower end of the field for presenters. Some can go as high $80 and others are as low as $10. The Kensington Wireless Presenter is $24. It is a good price for what you get and the more expensive presenter tools don't seem to me to be worth the additional money, at least on a teacher's salary.