1.2.4GHz digital wireless transmission,operation distance is up to 10 meters. 2.built-in mouse memory,no recoding is needed after battery replacement. 3.Intelligent Power-saving technology,the service life of one alkaline battery is up to six months 4.Intelligent connectivity,no need to code,plug-and-play. 5.Ergonomically designed,comfort grip. 6.Dormant class control and more power-saving hibernation connectionless. 7.800dpi-1200dpi-1600dpi speed adjustable. 8.Shortcut button can be used to browse the Internet or applications, easily on the toolbar "forward" and "backward" function 9.Power swith,in the case of not using power off completely.