Colorful Rainbow Backlit Light Up KeyboardThe backlit keyboard has a rainbow color backlight and 4 adjustable brightness(Off-30%-60%-100%), making it more convenient to type in low-light environments.You can easily select and adjust the desired brightness via FN + specific keys,allowing you to type efficiently in any lighting conditions (: , - ). Don't have to be familiar with the new keys, USB wired light up keyboard is super easy to use, it works instantly with any USB devices, no driver needed, no need to worry about interference that breaks your connection, no charging or battery consumption.