Multimedia hotkeys Multimedia hotkeys give you quick access to functions like media player, homepage, volume adjustment and more. Adjustable backlight LED backlight brightness is adjustable to make your fighting weapon cooler. Spill-resistant Spill-resistant keyboard design, so you do not have to worry about the keyboard malfunctioning after accidental spills. You can continue your game. Anti-oxidation sealed membrane The sealed membrane ensures a longer keyboard lifetime.It prevents oxidizing of the inside circuit, which may cause defect keys.