Split, gently sloped shape encourages a natural hand, wrist & forearm position for maximum comfort; Split-key & 3D design conform to natural arm & hand positions, reducing tension in shoulders, arms & wrists; Illuminated keys let user choose backlit color with 1 key touch & easily adjust brightness up, down or off to suit personal preference & mood; Large 2x-size print keys make it easy to read during the day or night; 1-touch hotkeys for controlling media player & browsing Internet; Membrane key switches provide better tactile response & quieter typing experience & last up to 5 million keystrokes;