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 16 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. The PMW3360 optical sensor with up to 12000 DPI provides for superior accuracy and precision gaming.