The A4TECH Bloody B135N Neon Backlight Gaming Keyboard features Adjustable Backlights, a Report Rate of 1000 Hz, Game Mode, Multimedia Hot-Keys, and Screw Enhanced Space-Bar. This Keyboard has FN + F12 ( Solid / Breathing / Off ) Brightness: FN + Up button/ Down button In this Keyboard, Its full report rate of 1000 Hz gives a faster and more timely response.