
Simple and works! Batteries are not required. Fits in a shirt pocket. Ideal for lectures. I teach computer programming to students. I use this pointer to point and highlight objects on a projection screen, better than a mouse, because the students see me walking towards the screen and moving my hands, rather than looking at my screens and trying to without looking . handy for pointing at computer screens to help students with their programs. I can point at the student from behind without taking away their mouse or keyboard. I recommend you buy a few of these in case you lose them. I keep one in my briefcase, one in my computer bag, and one in my drawer in my office. I haven't lost one yet and use it well in lectures and labs.

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