In it for the long run – enjoy 3-years manufacturer warranty on the device from the date of purchase. Experience ultra-responsive control with a 1600 DPI optical sensor (Mouse). Enjoy high performance with low noise â?? get high-speed, accurate typing with low-profile quiet keys (Keyboard). Maximize your productivity with this power-packed HP keyboard and mouse combo, perfect for professional use. Work with ease with a design that ergonomic, sleek and naturally comfortable.