The previous reviewer should try reading the manual. This device has precisely the forward-backward functionality they were asking for (an easy-to-use rocker switch on the side - operated by your thumb). It also has laser pointer AND mouse trackpad + left and right buttons. This means that this device can initiate videos within presentations (using the mouse buttons) as well as simply running forwards and backwards through the slides. It can even move windows around on the screen, if you want to get that fancy. Most of the other devices currently available on Amazon appear limited to the forwards/backwards and laser operations, so if your presentations involve more than just streaming through a .ppt, I'd recommend this option.