The Cougar 500K is a fully featured gaming keyboard, loaded with all the functionality you are ever going to need for both enthusiast and pro level gaming. All this with the Cougar design that has already changed the way gaming peripherals are seen. A Full-NKRO Membrane Keyboard that shatters forever the limits of what this class of keyboards was thought capable of. The Cougar 500K is the first membrane keyboard ever to be able to compete face to face, in any kind of environment, with high end mechanical keyboards several times its price. Its Full NKRO, reliability, ultra-fast reaction speed and professional level functionality are totally state-of-the-art technology that will take you to the apex of the gaming food chain.

Guru3D Review
"When it comes to features and functionality, the 500K is the best membrane keyboard currently available.... Being an N-Key Rollover membrane keyboard it outclasses all the non-NKRO keyboards and competes directly with high end mechanical keyboards." Full review