This product enhances the screen's impact and immersion by being installed behind TVs and monitors. It analyzes the monitor in real-time with the included camera, enabling realistic color reproduction. I purchased this new about a year ago. I'm selling it because I haven't been using it much. *Important Notes* It has been pre-cut to fit a 43-inch TV, so it can only be used with TVs or monitors of this size or smaller. You will need to prepare double-sided tape yourself for installation and re-stick it. The box and camera cover are missing. There are no problems with its use.