Illuminated backlit keys ease eyestrain & help user see correct keys in any lighting environment; 2x-size large-print keys; Black keys & bright white letters provide excellent contrast; 11.75 wide & designed with Windows(R) key layout, including an embedded numeric keypad; LED control, Internet & multimedia hotkeys; Membrane key switches provide a better tactile response & a quieter typing experience & last up to 5 million keystrokes;