- The NEMESIS Switch Optical RGB Gaming Mouse comes with an exclusive patented key switching system for an enhanced FPS/RTS/MOBA/MMO gaming experience. Enthusiasts can customize up to 12 switch keys to suit different playing styles, hand sizes, and for enhanced ergonomic comfort. The use of Japanese branded OMRON switches with a 50-million click lifespan provides durable, consistent, and accurate tactile feel with each click for maximum responsiveness; and the use of a PMW3360 gaming grade optical sensor with up to 12000 DPI provides superior accuracy and precision gaming. Equipped with 16.8million RGB illumination, gamers can customize their battle colors for added atmosphere. Additional features such as profiles, macro, lighting effects, colors and button controls can also be customized via software.