Control your game: Adjustable DPI settings for precise targeting DPI: 1000/1600/2000/3200 Optimum performance: High-end optical engine adds precise targeting, pinpoint accuracy and consistent response to your gaming arsenal Built to last: Gaming buttons rated up to 5 million clicks Contoured comfort: An ergonomic design optimized for all-day gaming comfort in either hand *HP standard 1 year Limited warranty from date of purchase