Quiet membrane key switches. With a life cycle of 5 million keystrokes, membrane key switches provide a faster response along with a quieter typing experience. Florescent 4X print keys. The large 4X size black print on florescent yellow keys provide excellent contrast and stronger appeal over traditional keyboards that have small, hard-to-read white letters on black keys. Multimedia and Internet hot keys. Control your media functions with one-touch using the built-in multimedia hot keys. You can also navigate the Internet and access your email with the built-in Internet hotkeys.