I have try dozen of mouse and keyboard and this be the best in every category . the feel of the keyboard be good and it be clearly readable even in low light . the mouse be comfortable and quiet and work smoothly with no jump around . the keyboard and mouse both work for a very long time on very few battery -lrb- just one for the mouse -rrb- . there be a low battery indicator on the mouse . the keyboard and mouse both wake up from sleep seamlessly - no accidental button press as with other wireless device . the range be superb - I have no issue use the mouse or keyboard from the other side of a large room . I use these for both Windows and Ubuntu with no configuration require . Perfect .