The SteelSeries Rival 300 Sago Hyper beast Edition is the ultimate professional-grade gaming mouse featuring an exclusive Hyper beast design. This mouse offers cutting-edge features including an Optical sensor with zero acceleration, new long-lasting SteelSeries switches (&get; 30 million clicks), and ideal ergonomics for enhanced comfort. The ergonomic grip is accentuated by the injection molded rubber side grips and intuitive, ergonomic button placement. It can be customized through a host of features including response time, adjustable buttons, dual lighting zones, our Exact settings, and a 3D printable nameplate. The Rival 300 Sago Hyper beast Edition is the perfect mouse for all Counter-Strike fans.