The Rival 500 is the first MOBA/MMO mouse designed to function with the natural movements of your h&. The side button layout is engineered to the natural contours of your thumb to react accurately & fluidly. With Tactile Alerts, you can FEEL in-game events. Everything comes together to create the most dynamic gaming experience possible for the sole purpose of helping you play better. Armed with gaming’s first flick down switches that are extremely easy to distinguish. It’s more ergonomic & gives gamers the fastest reaction time because your thumb moves faster when you flick down opposed to pressing in. When the battle is the most intense you can ALWAYS find the key you need. Ergonomic Design -Next-Gen side button design – easily reach every button by a rotation of the thumb -15 Button Layout -Create a thumb rest by physically locking the bottom buttons -Universal design built for every grip style Tactile Alerts -Feel in-game events, aiding in critical decision-making -Customize every aspect of the alerts from intensity to vibration patterns Esport Performance -Pix Art PMW3360 Optical Gaming Sensor -Pixel Perfect 1:1 Tracking -16, 000 CPI, 300 IPS, 50g Acceleration, 1ms Response Time Outlast the Competition -Rated for 30 Million Clicks -Reinforced Left & Right Clicks -Double-Shot Injected Rubber Side Grips Control all your Setting within Steel Series Engine -Prism RGB Illumination -Fully Programmable Buttons -Advanced Macros