Used but in great condition! Fast. Accurate. Deadly. Take your FPS skills to the next level with the Razer Basilisk. Boasting the most advanced optical sensor in the world and armed with features such as a dial for customizing scroll wheel resistance and a removable DPI clutch, the Razer Basilisk is the ultimate FPS mouse. The world's most advanced optical gaming sensor Scroll wheel with customizable resistance Removable DPI clutch in 2 different lengths Gaming-optimized Razer Mechanical Mouse Switches Powered by Razer Chroma