... , 2402MHz-2480MHz 2.RF operation channel, 16,automatic frequnency hopping 3.Rated voltage, 1.5V/3.0V 4.Rated current, 12-20mA System ... -in mouse memory,no recoding is needed after battery replacement.3.Intelligent Power-saving technology,the service life of one alkaline ... life may be different for personal habit of using mouse.3.In case of mouse failure,please check battery power and ...