That's an LCD mirror the shows an overhead image of the car from the Rydeen 360 system. It uses four cameras, front and rear and two on undersides of the side view mirrors. I can turn it on and off at will. I'm not sure the Rydeen 360 is worth the expense -- the image is rather low quality. I only use it in dire situations when I need a view that the Tesla rear and front cameras don't provide, which are few are far between.