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. Included in Box: Razer Basilisk Essential Mouse RGB Lighting RZ01-02650100 Certified Refurbished, Mouse