... design Operating distance:up to 10M 2.4G Technical SPEC.1.RF, 2402MHz-2480MHz 2.RF operation channel, 16,automatic frequnency hopping 3.Rated voltage, 1.5V/3.0V 4 ... 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 ...