"This is a High Quality USB Clip-On Laptop Computer Light by Lewis N Clark. It illuminates your Laptop keyboard in dimly lit areas to make working easier and safer for your eyes. The light clips to your Laptop Computer frame and swivels to provide light wherever needed. This light utilizes two long-life bright white LED lights that softly illuminate your keyboard to provide you with the proper lighting for reading, surfing the internet and typing. Simply plug the light into the USB port of your Laptop Computer, no batteries required."