I Use This To Teach and Love It
I love this laser pointer. I teach five classes at the college level, and I use this every day.
I enjoy this model for a few reasons. One is that it takes two AAA battery, so I can just use rechargeable batteries rather than buy specific watch batteries just for one device.
Secondly, it is extremely useful for presentations. There is only one push button, on the laser pointer itself, so you don't get confused with color, brightness, etc., so it is very user friendly. The weight of the laser pointer is also very nice. It is heavy enough for me to hold and keep steady, but not too heavy that it strains my hand holding it up pointing at the screen.
One thing that would be nice would be to have an option to keep the laser on without having to hold the button down. I think it would be useful to push it once and have it stay on for a few minutes.
Overall, I like this laser pointer and will keep using it to highlight various parts of my lecture.