Based on the name of this gadget, you can easily tell what it can do. It displays a computer monitor that will let you see it no matter where you place it on your screen. You simply need to click on this monitor and you will immediately turn off your monitor. This will allow you not to worry anymore about your battery being used up because you have left the screen on. If you are using a personal computer, you will be saving up on energy because you can turn off your screen while you are not using it yet. Truly, this is one simple and useful gadget to have.