The HyperX Pulsefire Haste 2 Pro 4K unlocks a whole new level of gaming performance. This is HyperX’s first mouse to support a true 4k polling rate, no extra components needed. This lightning-fast mouse reports its position to your PC four times per millisecond for incredibly accurate mouse tracking. The speed doesn’t end there! This mouse is equipped with HyperX Optical switches for smoother, faster actuation at every click. HyperX Optical Switches are engineered to maintain the tactile feel of a mechanical switch, without the input delay and debounce effect. True to the Haste family name, the Pulsefire Haste 2 Pro utilizes a lightweight 61-gram structure that you can game with for hours without the fatigue and drag of heavier peripherals.