The SteelSeries Kinzu v2 brings together a compact and simplistic style that includes 3 programmable buttons and an optical sensor. It"s lightweight, compact design includes an optical sensor, a double braided nylon cord and USB connection. The Kinzu v2 is durable with easy plug-and-play. Featuring three buttons and scroll wheel, including a CPI button which allows the user to toggle between two settings. Powered by SteelSeries Engine technology, the Kinzu v2 delivers the important basics to users: consistency, performance and precision.