Extremely robust materials designed to be durable using premium polymers To feel sharp from the first click to the last, the TrueMove Core optical gaming sensor has 60 million clicks. 8500 CPI, 300 IPS, and 35g acceleration for true 1-to-1 tracking Ergonomic design that is comfortable Ergonomically made to be comfortable during long gaming sessions Magnificent prism illumination Three zones with 16.8 million gorgeously crisp colors are made possible by redesigned lighting.