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This is a set of rechargeable motion-detecting light bars that attach by magnets to steel plates. The included plates can be stuck to smooth surfaces or fastened by screws. They can provide light in dark spots where no lights are installed or no electrical outlets are available. Although relatively small in size and not meant to light up a whole room, these lights shine pretty brightly and their intensity/color can be adjusted. That they are rechargeable via a USB charger is a plus for the environment and saves on battery replacement. The motion-sensing feature throws light on areas more conveniently and perhaps improves safety. To get the most use out of the motion-detector, test the position of the light before mounting to get the best location and results.